Snorkel Scooter - A Tow Rig For Snorkeling / SCUBA Diving.

A sightseeing rig for skin divers can be a simple project when you use the plastic pontoons available from several sources.
The article refers to a supplier named Rotocast Plastic Products. I did a web search and discovered that Rotocast still exists in various states and that flotation pontoons are sold through them under Rotonics. Bolt this surface skimmer together and you have a safety raft for divers.

Add a little electric trolling motor and it can tow you on a tour of reefs and underwater sights.

Control of direction is by the snorkeler / diver's grasp on the tow bar at the rear.
The tow bar also incorporates a 'kill switch' so that when the tow bar is released by the diver the power to the motor is turned off.

Four pages ( 3 sheets of paper - front on the first and third sheet, front and back on second sheet ).
B & W photos, illustrations, materials list, size specifications and instructional narrative.

My plans are from original source materials such as books, magazines and other publications and the pages are carefully removed.