a plate strong enough to carry the rudder. I would attach the plate over the hole with both thickened G-flex and with pop rivets. The boat and plate surfaces should be flamed with a propane torch so the G-flex adheres well. The pop rivets are mainly to keep the plate down on the hull and the G-flex while the latter hardens.
As for the material for the plate, poly, metal, ABS, or composite (maybe 6 layers of alternating Kevlar and glass) could work. It just needs to be stiff.
I'd probably just ditch the rudder, but they don't contribute much to my kayaking experience.....
Kayak Motor Kit
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