Hi Corky,
The bow deck bracing is looking very good. Should be strong enough to support you without any flexing. Have you looked into or decided on the style/type of pedestal seat socket base? Suggest you do that before you weld the deck sheet into position in the event you undermount the socket rather than top mount it. The rear corner braces look good. Like that you used the angle to dress the face of the gusset plate.
kent
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