On my 1978 26 the handrails were throubolted with a single long bolt from the outside to a nut and washer on the inside. Both inside and outside rails have bungs to allow access to the slotted screw head from the top and the nut on the inside.
I managed to hold the inside rail's nut by wedging a small flat-bladed screwdriver into the recess. I expect to reinstall them the same way. Jim Hesketh C&C 26 Whisper Miami, FL
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