predator???????????? not heard of that model. Usually you are looking at an ocean pro, destroyer, attaque, or assault. Post a pic and lets have a look at it.
I've driven 5m attaques with 150hp--not a machine for the inexperienced but in the right hands a mean machine. At 5.5m its high powered but it should be manageable.
If the boat is pulling to one side your trim angle is probably wrong. I assume it has power trim?? Its not an on/off switch it needs to be trimmed up once on the plane until the boat feels right. Find someone with a fair bit of experience to help you along at first.
oh and charlie can you take the bold print off please-its a tad annoying