Patt look like you were RIGHT!!learned to ride the skate board,finally.this baby rocks.got 67.4 GPS!!smooth.started sawing wheel as you said before chine walking started.my only question is am I through with this prop?150 MARINER MAG EFI.prop is a 23M fresh from Mark B&B and cupped..lift is super.leveled motor side to side. 2 3/4 below pad,6"CMC 6150 rpm 19-20 PSI some one said my tach might be off.If slip calculator is right I have 6%(great)if tach was reading high it would be@4%(NOT) ..am I through or do I need more prop?thanks for your advice!!!