The best hull mod for the blaster is moving the pump back a few inches, But forget about all that next year will be the first year for the sport spec class. Below are the rules for a blaster, No porting, hull mods or anything extreme like that is allowed to keep the cost down. A b1 well setup for this class will have a top speed of 52-55mph. And it will be up to the rider to be competitive. Plus the ski's raced in this class will still be reliable enough to play around on.
Yamaha Waveblaster
Exhaust Systems (Wet or Dry)
Heads (limited to pump gas only)
Waterboxes
Intake Systems (manifolds, reed spacers, carbs, filters, reed blocks),Mechanical Fuel Injection
Boring (limit to 1mm overbore for rebuild purposes only)
External Fuel Pumps
Primer Kits
CDI Units (non adjustable - MSD Enhancer, modded OEM)
Top Ends (Pistons, Rings, Bearings, Clips, Pins)
General Maintenance Items (Fuel lines, filters, Oil Block offs, Mats, Seat Covers)
Billet Couplers
Steering Systems and Bars/Grips/Throttles
Trim Systems
Props
Pump Shoes (limited to APBA limits)
Nozzle Systems
Intake Grates and RIde Plates
Sponsons (must be within APBA dimensions)
Hull Extensions