You need to get your RPMs back up to at least 5000. You can achieve that by dropping to a 13 pitch prop but I don't think it will help you get more lift from your bow. Mercury makes a 4-blade prop, I don't remember the name but a 13 pitch 4 blade might lift your bow some and get your RPMs back. Trophy Plus is the name of the 4 blade prop, I think it has good bow lifting characteristics.