No lobs, no overheads

Otherwise I play half court tennis in my living room, using the large foam ball. I have 6 feet of wall and 22 feet of floor, and room to do the swings  just like the pros teach us.  The ball obeys the same dynamics, with different coefficients, but its large size scales forward momentum to match spin.  Great stuff, simple and cheap.
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The foam balls will not break anything, keep an eye out on your swing radius.  Not limited to tennis, add golf, squash, or table tennis; just use the foam practice ball.