BLUEMOMENT

BlowingOldBoots wrote: I was thinking that maybe there is a high grab, strong adhesive, thick, double sided tape available that I could use. For example the tape could be used to stick the moulding to the hull or the blocks to the hull.

How about using sticky pads - the thin foam thingies with glue on each side? The good ones will stick to anything and the foaminess makes them good for bumpy surfaces.

Well, just to add a cautious note, I fitted a whole lot of cheap LED lamps into GRP cockpit lockers a couple of weeks ago. These use sticky tape attachments (not rubbish, 3M double sided tape), and almost all of them have now fallen off - without the boat going anywhere. Utterly shyte performance. If I re-install them it'll be with something a bit more robust.

DaveS wrote: I fitted a whole lot of cheap LED lamps into GRP cockpit lockers a couple of weeks ago. These use sticky tape attachments (not rubbish, 3M double sided tape),

I think that I've bought the same ones - pack of 3 round fittings - each fitting takes 3 AAA batteries - can't remember where I bought them - Lidl at a guess. I've only fitted one so far - onto wood inside the food locker so I'll see how it goes. I have access to rolls of double sided tape if I need to upgrade it. As long as they don't fall off quite early, then most DS tapes get stronger with time.

Ash

Yes, they're the beasts. Silver coloured plastic and yes, Lidl I think - one of their cheap deals.

Use Sikaflex, great bonding agent.
I know of a boat lifted onto a truck which had recently had the keel rebedded in sika, after lifting onto truck they realised there were no keel bolts in, sika held keel on!
C_W