hi guys my dilema is im about 2 purchase a stabi craft 459, but now want te 509wide, already hav 60efi fs yammie. maximum 4 the 459 but 2 small 4 the 509w. 459 280kg. 509w 430kgs.At the moment i have 6kilos per hp. wit 459 6.4kilos per hp, 509w 9kilos per hp. many performance reports on yamaha site say that it would push that weight? i have a 4.73 tinny at 244kg top speed 64ks/cruise 45ks even with 2 mates aboard 4 an extra180ks plus gear. 509wis recommened at 75hp min 100hp max. dealer ship in nsw sells 509w wit 60 2stoke, but dealer in bris says it would b under powered. i dont wont 2 fly but i dont want b draggn me butt at turtle pace .would appreciate an advice from sum one who can lead me on my way! 459 wood b more practical financial as i could use motor n trailer from the new boat i bort 4 mths ago. heres hope n i get it rite this time ... thanx again ........don