Does anyone have a rear sponson template?

[All stock 701]

Im looking to make rear sponsons for my superjet. I need a template to take to the local plastic shop.
Thanks in advance.

 

[Justinlowe948]

Mark out the shape in a peace of plywood and that a router with a straight edge at 1/4in go to your lines.

 

[Vumad]

1.25" below the bondrail, about 21" long. Adjust length if you want to use the stock bumper holes. Measure the depth of your bond rail and add that to the 1.25".

Don't go to a plastic shop. Buy cutting board at the dollar store. Cut the board in half. Mark the holes to mount to to your bond rail. Drill out the holes in both boards then use these holes to bolt them together. Draw your sponson using a straight edge and a French curve. Rough out with a jig saw. Finish by sanding. Unbolt, 2 matching sponsons.

 

[Vumad]

I used fiberglass but if I did it over I would use cutting board material. Fiberglass worked, it flexed a little but the bigger problem was that it was sharp.

All of the details are listed in my build thread.
My 1st Superjet