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I hate to be captain obvious but...............As a group, old men are grumpy and jetskiers are rude and obnoxious.

The only thing that will be faster is your engine replacement schedule. Remember that load squares with speed.

Leave it stock if its not cutting out on smooth water. This usually takes a ported cylinder and low pitched impeller.

The stock 701 exhaust has no tuning. They provide very linear power just not nearly as much as a tuned pipe. The good thing about a pipe is that you can run a very restrictive (quiet) muffler without reducing power. I experimented with small exhaust outlets, I got it so small that it whistled...

Footholds are for freestyle. I cut some full length slots in my SJ lake cruiser. They made it much more comfortable and I can still hook my feet in for wake jumping.

Congrats, it looks like it will work well for you.

Many parts are seldom good to buy used. Many sellers don't actually possess what they are selling. Plus many buyers have elevated expectations of quality and service. There is just not enough money in this for even the best providers to offer top shelf support after the sale. Others are just...

You can mill it down to the edge of the squishband if a stock head gasket is used. You need to make sure the squish is at least parallel with the piston. Many like to cut the squish a degree or two more than the piston crown.

A/M hulls are all short for flips and built to handle side landings. You can roll a SJ but everyone I know caved in the side learning how to do it. There would be no market for A/M hulls if people didn't think flips were cool.

Start increasing the spark lead until a piston melts. You can hear the detonation if your exhaust is very quiet. A stock airbox will help a lot with intake noise.

Behind the hood.

Your knees and shins will not like those sharp corners.

The auto bailer has to have a tiny hole in that little plastic fitting that should be mounted high in the hull. It will take on water if the hole is clogged or if the top of the hose is below the water line.

Overall, the stock 91-95 intake, carb, and F/A is hard to beat in that application.

That gasket is for a CDK2. Find a manifold from a 1991-1995 650 and a carb from a 91-93 650sx. The X2 version throttle cable pulls from the top and will work with the X2 flame arrestor.

The stock small pin 750 (CDI no.3729) advances 3* and stays there. Adding a 7* advancer plate with a tight head can be too much for full throttle runs on pump gas. Big pin 750s go to 20* and then retard back to 14*. They are much safer to use.

FYI, the early Skat 14/17 were 15.5 with the leading and trailing edges bent down. effectively cambering the blade. A year later Solas introduced the Super camber series 13-18, then Skat had to one up them with their new 9-17. The selling point at the time was more spread the better. Whats...

The 14/17 will make better thrust and run much smoother than either your Skat 16 or Solas 17 degree impellers. A Solas KA-SC-A 13-18 runs about the same as the Skat 14-17. Skat used an O-ring to seal the splines which does not work very well and has all but destroyed every 650 driveshaft. They...

Get a long 4" silicone coupler and try different lengths. Long cones were popular in the days when people liked to lug their 650s down with 16 degree impellers. I think you will get better performance with a lighter pump load. Then you run into the limits of a stock 650 CDI. A complete 750sxi...

Why would you lengthen the pipe? It will turn more rpm with the 550 pump.