I prefer to swing a full sized bat. Most of us have them laying around. If for some reason, I don't have mine, I'll grab my own dd's bat. Not someone else's bat.
I agree with that, but DD is a "player" as well. Fortunately, she's been swinging a 33 or 34 for some time now. I used a wooden LL bat for awhile. It gave me better control on grounders, and using a full size SP bat resulted in too many balls going further than I wanted and me getting really tired swinging it as rapidly as I needed to before a game.