Most backyard soccer setups fail for the same reason: parents try to build a mini stadium, get halfway through, and the lumber sits against the fence until spring.

The kid doesn't need 11-v-11 dimensions. They need a space they can walk out to without you driving them.

A rebound wall in a 10x20 strip along the fence line will get more first-touch reps than a full field you visit twice a week. Grass is fine. A slight slope is not — roll a ball and watch where it drifts before you start cutting wood.

If you're handy with a drill and a circular saw, the rebound wall is a Saturday. Pressure-treated 2x4s, two sheets of exterior plywood, carriage bolts (screws work loose), a 5–10 degree lean so the ball comes back down instead of over their head.

Paint a strike-zone grid on it before you seal. Costs leftover paint. Instant feedback on every shot.

That's the whole idea. Not a stadium. Repetition.