We have had one and it's our second year with it. I had forgot to inflate it last Saturday so we used the "regular" tow rope. ALL the kids complained about the water spray and wanted the booster ball blown up and attached. So on Sunday we inflated it and the kids were once again happy

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As for the twisting, once you're stopped (to pick up the riders that you threw off the tube) IF the wind catches the ball and it blows over the line, it can end up twisted. The kids have all learned how to pull the ball up to the tube and untwist it (by throwing the line over top of the ball).
I now have a portable air pump that's rechargeable and use that just for the booster ball - so at the end, when we're done, we do deflate it to stow it. Next time we go out, I just use the rechargeable air pump and blow it back up.