That looks like fibreglass resin and CSM. Fibreglass will be a poor job with that alloy section. Use epoxy and cloth. It's probably cheaper and certainly easier with a much longer working time, no smell and a far stronger job.

Thanks for the advice Ramona. I figure it's not going to be an easy job. Looking through the hole, doing a bit of work and again checking through the hole to see if it is right. I can see it being a time consuming process.

Looking forward to tackling it however. Maybe a bit crazy like that. I don't mind getting into challenging jobs, especially if it gets my boat up and running again!

Did a similar job on a Windrush hull a few months ago. Once you get your arm in that hole you will be operating by feel! All that paint and rubbish fibreglass will have to come out. Then after the surfaces are roughed up coat the repair area with epoxy. Have sections of cloth cut up and wet out on a board then place them in position till the area is covered. Wear gloves and smear the resin over the patches. Stipple with a short hair brush to get the air out. It's not going to look pretty!

Finally got the repairs finished. Brett at windrush helped out with a bit of advice. He thought when the top if the hull was put in place the pylon hit the side first and all the glue had come off. Which is shown in previous photos.



Seeing there was no glue to start with I applied megapoxy into the gap. Attached a rachet strap from the pylon around this hull to the pylon on the other side. To twist the hull a little and take the pressure off the side where the hull was being pushed out by the pylon. Now since the strap is gone the bulge seems to have receeded.

So looking forward to getting back out on the water! Been too long.