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    HPDE Sponsons for a 23' GRP runabout

    No it's fine underway if a little bouncy from being too light, at rest it's tippy. It doesn't go anywhere near fast enough to chinewalk. It just...
    Post by: Rotto boat, Feb 25, 2026 in forum: Boat Design
  2. Rotto boat
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    HPDE Sponsons for a 23' GRP runabout

    Hi Bajan, It's Voyager Marquis, built 1980 in Perth Western Australia. They are all much the same. The stringers and ribs are a hollow moulded grp...
    Post by: Rotto boat, Feb 25, 2026 in forum: Boat Design
  3. Rotto boat
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    HPDE Sponsons for a 23' GRP runabout

    Hi, We have a 23' Deep V runabout (24° transom) that is unnervingly unstable at rest. The boat was built too light. Can HPDE be used as bolt on...
    Thread by: Rotto boat, Feb 25, 2026, 9 replies, in forum: Boat Design
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