riverman wrote:
It is a 13. didn't think about taking off rim--might work.
Recruit a lanky kid. It is doable, if awkward, and one of the reasons Hobie introduced a surface mounted fitting.
Other option length of timber with a block on the end at 90 degrees with a V notch cut in to it reach it and wedge around the nut, like makeshift angled molegrips. Just enough pressure to loosen it, then you can back it off from the cover on the outside. Its not a tight fit. In fact it slips the thread if you try to overtighten