Yup, just got a '72 Fiberform Tri hull 18 footer, outboard, I think the model is the "BeachComb"(er). Came with a Johnson 70.that pushed it at about 28 MPH on test ride. Going to replace it with a Johnson 115, hoping to get 35+ and cruise at 30. Prior owner selling it because it didn't really fit into his boat lift at the lake. I saw his lift. He got a 15 foot tri hull that is a perfect fit for his lift.
My 72 Tri-Hull Fiberform 18, space-wise, feels like a 2000's 24 foot pontoon boat had a love child with a 16 foot bass boat. Yes, rough ride in chop. Everything else about these tri hulls is pretty awesome.
Getting rid of my '74 Seaswirl 16 foot Tri Hull outboard, going to swap motors first. Noticed during the test ride that the Fiberform 18 ran a lot smoother on light chop than the Seaswirl 16. Also, the Fiberform 18 is an open bow model, and the extra 2 feet is all in the front seating area. The Fiberform 18 will seat 6 very comfortably, and as many as 9, not that I would do such a thing as pack 9 people in. Now the 70's "Harvest Gold" color I'm not wild about, but next summer it might just get a lime green top and black hull repaint. It even came with a galvanized trailer, a requirement for Puget Sound saltwater use.
The Seaswirl 16 tri hull was awesome in calm water, but a rugged ride with any chop and had a closed bow/storage instead of open bow seating. Loved it aside from that. Towed a dead pontoon boat a couple miles home with it in Puget Sound this summer.
Wish me luck with the Fiberform 18 Tri Hull. Transom feels solid, whole boat seems solid.
