I have a 2004 alumacraft magnum 165cs with 90 etec. 2nd hole mount and 13.8 x 17 ballistic 3 blade prop, full load with full 22 gallons gas, gear, livewell empty, 2 guys at 230 and 250lbs each, 5 ac delco group 27 batteries, 9.9 merc kicker and 101 minn kota up front.
I get 38.8mph gps at WOT at 5200 RPMs. 35mph seems a bit slow.
I do remember reading that the alumacraft factory can hammer down the lip on the pad to fix the plowing issues (and the opposite on porposing issues)
What are your rpms at WOT?