For some time now I have been running a vary trick hull.Let me explain this modification as I have been working with this platform for quiet some time.

At the end of 2007 at the APBA Nationals I ran into a guy named Lee “owner and fabricator of the The Mod Shop”.  During this meeting with Lee I was shown a vary special hull for the Ultra 250 platform. Looking closer I noticed a very close resemblance to the 15F bottom. When I asked it was explained to me that this was indeed a highly worked over and modified molding of a 15F bottom.

A deal was made at that moment that I would invest and work with Lee on my new 250 platform. At that moment I bought into the platform and started work soon after.

Lee and Macc Racing was extremely kind and allowed me to work within their shop in Southern California. It started with me purchasing a new 08 and starting to have the woman strip off items not needed. Oh wait! off the boat of coarse.

I then crated up what was left, “hull and engine”. I wanted the hull shipped as we decided to use the stock top deck to stay within the APBA Open class rules.

Now crated and heading to California the Ultra was to meet its new bottom.

This bottom is the highly modified and custom made to tailor to the Ultra weight and pump design.  I chose to keep the bottom and top split apart until I could install the motor.

Lee showed me the process of ensuring perfection of drive shaft alignment and thru hull placement.

You will notice in the next picture the motor mount bolt down points has two locations drilled out. This is to allow the flexibility of running a 250 motor or a 15F/sc motor. Either one of those two applications is already aligned for these motor platforms.

You will also notice the molded liner to allow the 250 tank to rest nicely within the 15F inspired bottom.

Every detail is already addressed by the Mod Shop. I even got to choose the layering of my bottom as to allow for offshore use with thicker layer during production of laying the hull in the mold. Even the simple things such and tank brackets for straps and the battery with cylinoid mounts.
Once Lee found the hull to be to his liking we then went on to mounting the motor to the bottom half of the hull.

Notice the thru hull fittings for the multiple water lines from the pump box. Lee provides plenty as to allow for many different applications of water routing.

I gotta say if your going to work on your ski this is the way to do. So easy to mount line up and install. Also notice how Lee makes the hull so close to the Ultra fitment that no special fabricated items are needed.  Even the exhaust was a Riva free flow kit with thru hull. Everything was so well aligned it just dropped in and fit just fine.

Before we split the stock top off the stock hull we decided to see what the stripped hull weight was.

The pump intake is off a 15F bored over to allow fitting of a Skat Trak Magnum pump.

From this point we went on and had the stock top installed and bounded down to the new modified bottom.  Simple steering and throttle hook ups were easy to finish off. I opted to go with the Mechanical Trim tab system. Shown here on a Ultra Lite shell.

Here is my finished boat on the water getting its first run for dialing it in.

Notice the above picture of how I went with the optional Hood and Seat from the Mod Shop.

I’m going to show you pictures of other ULtra Lights I built since the first one. In this pick you will see we painted one black but decided to try and mount a motor into the boat after the half’s were bounded together. As you can see it fit just fine and was actually easy to do.

Here is the motor settled into the new Ultra Light.

Here you see the cross over exhaust by simply using the Riva Free Flow kit with exhaust thru hull tip.

And the Exhaust tip.

Here is the tank mounted and electronics mounted. Notice how Lee keeps the simplicity of the hull but also does all the brackets to easily mount things without the need to fabricate anything yourself.

The following is of the ECU location I chose. I wanted mine high and dry along with the air intake. Special made air filters from our guys at R&D.

Now as for the this modification. Its not cheap and the people who benefit the most from a modification like this is going to be mostly racer who desire that fast neck snapping turning. This hull is defiantly a major improvement to speed and cornering. Speed on a modified engine are from 76 to 80 mph and 73 to 76 mph on a stock motor and stock pump with this hull. Turning is exceptional and handling is easy and aggressive. A must have for the serious racer.

TeamMoto is a Mod Shop Dealer and buying one is simple to do along with simple to drop your motor right in. All the holes are drilled for you and its a simple application to bolt one down.

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