My gennaker set up was factory supplied so I have the Harken
36T winch supplied by FP.
There is not much space in the hard point to port of the original clutches so unless you want to reinforce the sandwich area it is only practical to add the clutches on both sides. I don't think this layout is an issue.
The Spinlock clutches claim that the sheet can lead at an angle of up to 30 deg to a winch without rope
damage. None of the angles are anywhere near 30 to teh starboard winch but nevertheless I have left the Mainsheet (most used) in it's original clutch
which is almost direct. likewise the main halyard
is also in the original clutch as 2nd most used and likely to have the most tension applied.
You can reef without using the foresail winch.
1: Ease halyard and cleat - I have read in threads on single
line reefing that it is a good idea to mark the halyard so you can let the right amount out.
2: Take up on tack line - either by hand or remove the cleated halyard and use the stbd winch if you need it. If you are heading into the wind
it should able to be done by hand. If you think about it the standard straps are fed by hand with the sail loose.
3: tension halyard and cleat
4: Take up on clew line on stbd winch and cleat.. This is a reasonable angle and these lines are not used that frequently and are typically set and not adjusted much.
5: Mainsheet back to stbd winch.
You would be able to use the inner winch for the tack lines (inner clutches) if you wanted to but I think the crossover on the outer (Clew) clutch would be too great.
With the Mainsheet in the middle clutch bank there is a crossover between the mainsheet and the tack lines and a risk of chafing if the tack line is too high when tight. This is OK as set up but there there is some room to play with the position of the blocks on the mast collar to optimise this. Worst case would be a fairlead of some sort to seperate them. I could not get rid of the crossover and maintain a direct line to the winch for the mainsheet without major surgery and I am trying to keep it low impact.