no pics but funnest old school boat I have been on was a friend in boise that had a 90's boomerang. that boat flat out moved and could spin on a dime.... great times on it...
afaik, he still has it and uses it. last time I was on it was summer 2012.

berg, my family used to have a place on payette lake in McCall back in the 70's. had an old orange and white tri-hull with a 65horse evinrude outboard on the back that looked almost identical to the one you posted up. I still remember many summer saturdays watching my old man use very "colorful" language to work on that thing... fun but it spent more time dead than running... as a kid we would sleep on the fold down seats at night under the stars..