Sit on Kayak Pedal System

Made from a sit on kayak, a bicycle, weedeater and assorted parts, this water-craft is relatively easy to build, great exercise and fun!

1 sheet of 2" blue insulation foam (4 ft X 8 ft) (or sit-on-top kayak)
1 bicycle (or 'Big Wheel' trike)
1 old 'Weed Eater' or weed whacker of any make
1 wooden or plastic model aircraft propeller (mine's 18 X 12 but somewhere in the range of 10 X 10 to 16 X 16 should do)
1 3/8 drive 90 degree drill chuck
various and sundry wood and metal bits to connect it all

Insulation foam is relatively easy to work with and makes a utilitarian pontoon boat. (working on Instructable for my new design)
Alternately follow these directions (Dual-Motor SIP&PUFF Controlled Kayak System or https://www.instructables.com/id/Foamboat-construction/)

Disassemble "Weed Eater" to get to the flexible shaft assembly.
Remove the weed whacker head and attach propeller.

Use bamboo supports to mount bicycle to pontoon boat

Position and mount propeller unit to the bicycle/pontoon boat assembly using U-bolts to clamp it in place

Find a pond/lake/river deep enough for your boat/propeller and pedal away!
(Pictures of finished project ASAP!)