Airboat plans & patterns plus one extra set: order this if you want an extra set of plans & patterns included (only 1/2 price for the extra set). How to build plans. if you are planning to make some improvements on your home, or even construct a new shed, extension, or garage from scratch, my website is the ideal place to start your project.. Airboat (the following report was based on the first test run.) up date on glen-l airboat, mon, 16 oct 2000 hello barry…. i was afraid to very fast, but 2000 rpm put us at 25mph..