Set my pump last year, was told I should end up with 1/4 to 3/8 in of the shoe below the keel line. That's where it ended up when I set the pump at the 4 degree recommendation. Now we are setting the pump in a friends boat and the shoe is ending up above the keel, biting no water. We are thinking the intake and shoe was set up wrong by a previous owner. Mine was an 18ft V bottom, his is a 19 CP gull wing. I figure you need to have the shoe bite some water, and tune from there. I've seen lake boats with 1/2 in of shoe hanging down. We just have 500-600 hp pleasure jets. I know somebody on here can give us some guidelines, or tell us what they are running. HELP !!!!