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). Last reviewed: 21 dec 2014 last updated: 21 dec 2014 first published: 31 dec 1999 permanence not guaranteed. 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..