I have 2 IDP leagues and 4 years ago tried a little some thing different. You have to have owners that are cognizant with deadlines. We always draft early, right before preseason. We have 5 extra picks beyond our keepers. A few days prior to the actual regular season we have to cut our roster by 5. (Any 5) In our case we have to set the roster at 40 on the site so in order to not have empty spots for waivers you have to at the same time pick up 5 either defensive teams or kickers which are set to score nothing. The fun in this is sorting out your roster for the cut (a trip) and the drop league wide gets nutty (60 new players on the wire all at once) It took about 2 years to get the kinks worked out. but it's part of it now.