signature 530c bow roller

[roboat1]

hi all looking at replacing bow roller on fiberglass bowsprit signature 530c 2005 model has anyone done this as there are 3 large bolts or screws but when you try to unscrew these they just spin around i suspect they have nuts on the end but they do not go through to outside and there is no way internally to get to these any clues greatly appreciated

[Jarrah Jack]

I did it on my 520 Sig and they were bolts with nuts underneath. The 520 and 530 are the same hull. Will be doing the same with my 540 Sig and I've noticed that I may have the same problem as you have as I couldn't see the nuts. If the head just goes round and round you may have to drill the heads out.

I'll be interested to know how you go.