Footballguys.com, that's who I use for my IDP Pay league, they offer custom scoring for your league rules and they are really good with IDP Projections. There is an IDP fourm here as well in the far right of the forums. If its not IDP this is the place to be. Trust me I have used a ton of different sites, this one and Footballguys.com are hands down Teir 1. This comes from years of searching. Welcome to Draftcalc you're going to love it!