I've finally decided to retro-fit the 'industry standard' Winder centreboard control system to 3616. The only tricky bit is running the take-ups under the side decks as the original blocks under there would have been fitted, I assume, before the decks were stuck on the hull. Has anybody come up with a solution to this problem? One option I'm considering is fixing the blocks to tufnol plates and then epoxying the plates, with blocks attached, under the decks. 
 
Thanks in advance for any sensible suggestions ;-) 

Your solution is exactly the way to do it.
 
 Plan your block height under the inwhale carefully as if it chafes it wont work as well. The forward block usually needs to be as high as possible, but on a retrofit the clear path will depend on whats there already.

Cheers, Chris. I couldn't really see any other way, short of drilling through the inner edge of the sidekick and then making good. Would you bother with ball bearing blocks or just use plain bearing ones?

*sidedeck*

If you've got them use ball bearing, but if you haven't plain are fine.

I think it might have been me that did the one string on this boat - if I did you may find the inwhale blocks are already there?

Now you mention it, I think that might have been what I was told when I bought the boat. Didn't occur to me to look for existing blocks. If they are there...'thanks!'.
 
A