[quote=Green]
Yeah, see, that's what I've always thought would be the most efficient approach. But I've seen cases where it basically ends up in a clusterfuck ala;Player 1: I prep my kamehameha.Player 2: Oh shit, I quickly fire a bunch of ki-blasts to stop him from charging his kamehameha!Player 1: I fire my prepped kamehameha, destroying all the ki-blasts on it's way over to Player 2.Player 2: I die horribly!Or;Player 1: I prep my thunderpunch.Player 2: Oh shit! I try to punch him to stop him from charging his thunderpunch!Player 1: I use my prepped thunderpunch towards his face, meeting his fist along the way.Player 2: I die!
[/quote]

Part of prepping is it has to have a cost, it usually means a lack of concentration, or it takes a significant time. Gives the opponent plenty of time to interrupt.