Yea, Belmont Boats was know for its flat bottoms in the 60s. They were a custom manufacturer that built quality boats. I got to know the owner in 1978/79, but haven't been by the old shop (located just west of HWY 99 on Belmont--across from the cemetary) in many years. From what I remember, their jet boats were solid and fairly heavy with a long "crowned" deck, but with straight bottoms and a good ride. I used to see them regularly around the Fresno area, but very seldom see any--except for a couple major projects listed for sale in the past year or two. I have seen several pretty nice flat bottoms recently.
If you want, I'll check to see if there is anyone left at the shop, so give me a call--might save you a trip.
Mark--"Sanger Pete"
markpete559@comcast.net
(559) 917-1785