finally splashed the new boat, gotta few questions.

[booyagasha]

Finally got to take the 1851 cc out for her first real outing..Never really gotten to test her out until today.(good Friday) Well , besides the speedo being18-20 SLOWER then GPS, and my fishfinder not working ,everything turned out great. She gets up on plane in less than 2 1/2 -3 seconds without doing anything, Hole shot and whip the wheel quickly, she's pop on plane with ease and trim up some and she'll do 55 on GPS not full WOT. Was a bit hesitant holding her at WOT and trimmed up, she likes to track on her own at full WOT. Im guessing she'll touch 60 but'll without tabs or hydrofoil, she'll be to unstable.

should i get tabs or hydrofoil for my tracking issues?

anyone know why the speedo off like how it is?fastest i might have been 55-56 but speedo 's sitting on 33-35? could something be wrong with my pitot tube? how is it supposed to be mounted via transom?