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I just bought a 20' by 6' bottom SeaArk with a 200 hp Merc inboard. It runs 42 mph at 5200 rpm. We came up the Copper with about 1400-1500 lbs in it and it hardly noticed it. It (and I think any other) did NOT have reverse one iota (pump will pump water against hull) until a welder put extensions on the water diverter. Now there is pretty good reverse. I have a 3" tunnel too, and can not swear that they are necessary or useful. Check out Predators and others before you build, and have an experienced welder do the job. Small screwups in the tunnel can sink you. Hope this helps. john

Message Thread:

• inboard jets on flat bottom boats akrobee Aug 01 2005
  • work fine jklingel Aug 08 2005
    • hey John 375ultramag Aug 09 2005
    • cool akrobee Aug 08 2005