Best Practice Golf Balls for Nets & Cages UK: Real vs Foam vs Limited-Flight

Buy a garden golf cage and the next question arrives within a day: what do I actually hit in it? The answer matters more than people expect, because the wrong ball either wrecks your feedback (foam telling you nothing about your strike), wrecks your data (airflow balls making a launch monitor guess), or occasionally wrecks your fence (a “limited-flight” ball that flies further than the packet claims). I hit balls in my own cage most days and I have tested every category through a launch monitor, so here is the honest sorting of real vs foam vs limited-flight vs airflow — what each is for, and what to spend.

The short answer

In a proper contained cage: hit real golf balls. That is the entire point of a cage over an open net — full containment means the ball's flight is irrelevant to safety, so you can practise with the same ball you play with and get feedback that transfers to the course. Foam earns its place indoors and with young children. Limited-flight balls solve a problem a cage has already solved. Airflow balls are a toy. The rest of this guide is the reasoning, because the exceptions matter.

Real golf balls: the default in a cage

Strike feel, turf interaction, sound, sting on a thin one — every piece of feedback your hands and ears give you is calibrated to a real ball. Practise with anything lighter and you are rehearsing a slightly different shot. More importantly, if you use or ever plan to use a launch monitor, real balls are the only choice, full stop. Radar and camera units measure ball speed and spin off the actual ball; a foam or hollow ball compresses differently, spins differently and flies at a fraction of real speed, so the numbers are fiction. Every unit in our launch monitor collection assumes a real ball for accurate spin and speed data — that is not a brand quirk, it is physics.

You do not need premium balls for cage work, though. My own practice bag is a mix of mid-price two-piece balls and lake balls in decent condition. Save the tour balls for wedge sessions where spin feedback matters, and hit the cheap ones with driver.

Foam balls: for indoors, and for small children

Foam has two genuine jobs. First, indoor swing work where a real ball is out of the question — living room, garage without a proper net, hotel room before a golf trip. A dense foam ball gives you a target and a vague sense of strike, which is enough for rehearsing positions and tempo. Second, young children: for under-8s swinging in and around a garden setup, foam removes almost all the risk while they learn that a golf swing is a big, committed movement. What we found with family customers is that foam balls get the kids started and real balls arrive the moment they can reliably hit the mat — usually within a season.

Just be clear what foam cannot do: it will not tell you whether that driver was flushed or heel-struck, it is wildly wrong in wind, and no launch monitor will read it usefully.

Limited-flight balls: rarely worth it in a cage

Limited-flight (reduced-distance) balls exist to make open-air practice safer in spaces that cannot contain a full shot. In a contained cage they are solving a solved problem — the net stops the ball at 3m whether it would have flown 50 yards or 280. You pay real-ball money for worse feedback and useless data. The one honest use case: if you split your practice between the cage and open pitching in the garden, a few limited-flight balls for the open work is sensible. For the cage itself, skip them.

Airflow (wiffle-style) balls: not for cages

The perforated plastic balls are fine for what they are — a garden toy, a chipping game with the kids, something the dog can lose without financial consequence. But they weigh next to nothing, give zero strike feedback, and are completely invisible to launch monitor data. If you own a cage, there is no session where an airflow ball is the right pick over foam (indoors/kids) or real (everything else).

Comparison: what to hit, when

Ball wear: what the netting does to your golf balls

Balls in a cage lead a hard life — hundreds of impacts into netting, dropping onto the mat, living outdoors in a bucket. Cover scuffing is the main wear: after a few weeks of daily use you will see the paint dull and the odd scuff mark from the net weave, faster if you drag them across a stone-flecked lawn between sessions. It is cosmetic long before it is functional, but it is one more reason not to feed tour balls to your driver sessions. Keep the practice balls in a covered bucket, and retire any ball that develops a visible cut or smile — a damaged cover changes flight and, more to the point in a cage, changes rebound unpredictably.

How many balls do you need, and why you should mark them

Fewer than you think. The cage returns everything to your feet, so you are not stocking a shag bag — 12 to 20 balls is the sweet spot. Enough that you hit a proper unbroken set before collecting, few enough that you rotate wear evenly and notice when one goes missing. I run 15 in my own cage and re-rack twice in a 45-minute session, which doubles as a natural break to reset focus — the structured sessions in our free 90-day practice programme are built around exactly that rhythm.

Mark them. A dot or initials with a permanent marker does three jobs: you spot intruder balls from the course that snuck into the bucket, you can dedicate a numbered set to launch monitor sessions so wear stays consistent across your data, and when a ball does escape a gap you left in the door netting, the neighbour knows whose it is. Small thing, saves arguments.

Winter ball behaviour: cold balls fly shorter

If you practise year-round — and a cage is the reason you can — expect your winter numbers to dip. A cold golf ball compresses less efficiently and comes off the face slower, and cold air is denser too; denser cold air adds drag (the Met Office explains how UK temperature behaves through the seasons), so carry distance drops meaningfully in cold temperatures. In practical terms: the launch monitor is not broken and neither is your swing when January carries read shorter than August ones. Keep your practice balls indoors between winter sessions rather than in a frozen bucket in the cage — a ball at room temperature behaves noticeably closer to its summer self than one that has spent the night at 2°C.

Frequently asked questions

What are the best golf balls for a practice net or cage?

In a fully contained cage, ordinary real golf balls — mid-price two-piece or good-condition lake balls. They give true strike feedback and accurate launch monitor data. Foam is only the right choice indoors or for young children.

Can I use foam balls with a launch monitor?

Not for real data. Foam compresses and spins nothing like a real ball, so speed, spin and carry numbers are meaningless. Radar and camera launch monitors both need a real ball for accurate readings.

How many practice balls do I need for a garden cage?

12–20. The cage returns every ball to your feet, so you only need enough for an unbroken hitting set before you re-rack. Mark them with a dot so you can track wear and identify escapees.

Why do my golf balls fly shorter in winter?

Cold balls compress less and leave the face slower, and cold air is denser, so winter carry is genuinely shorter — manufacturer testing confirms the drop. Store practice balls indoors between winter sessions to reduce the effect.

If you are still weighing up the cage itself rather than what to hit in it, start with the Pro Cage bundle for the full driver-rated setup, and use the Practice Lab to make sure those 15 marked balls are earning their keep.