regarding your second question:
Has your boat lee- or weatherhelm when hoisting or dousing?
I drop the traveller and open rotation and downhaul. My boat has leehelm with this setup. I can leave the tiller while hoisting, the boat will not turn to the wind, has no risk to capsize.
Upwind, the boat has slight weatherhelm.

Why is getting back on board a problem for uni sailors? Two people need twice the time to get back, I would say. Or are you saying that it goes faster when one helps the other?

Cheers,

Klaus