Hope I'm not to late to offer some advice-I've found a system that works quite well for me. First, I tuck inside a pair of plain cotton panties (tight is best, but anything works fine). Then, I put the gaff on over that. It does a lot to reduce the "mound" effect, and it holds a lot longer than the double-panty technique. I've found that given the, um, mass of what I need to hold in place, this is the best technique. It's completely painless-it gets a bit hot in the summer, but it's not a huge payoff if you ask me. Best of luck!