Cash game problems

[myklej]

I have a cash game with 8-10 guys and the blinds are $1 and $2. The max buy in is $100 and everyone is comfortable with that. We typicall have $2000 in the pot at nights end. The problem we are having is when someone gets busted later on in the game and they buy back in they cant really make a move on someone who has $500 or more, they have to just wait on the nuts basically. We have tossed around the idea of when the pot doubles you can buy in for double. Any help would be appriciated.