I found this:
Outdoor Water Sports, Inc.
PO Box 5043, Missoula, MT 59806
(800) 239-7238 (406) 251-3337
FAX: (406) 251-3338
Contact: Hugh Frame
WaterMaster Power Flex Fins--one size fits all. Lightweight, good kicker for pontoons, float tubes and WaterMaster rafts. Dealer inquires welcome
But the site is down. I'm curious - does it incorporate a full front end unlike pontoon? A shop affiliate, the Rod Builder's Workshop, carries a raft that is a hybrid between the pontoon boat and the kickboat. I'll find out what the brand name is.