I have a CDI
fuller on Turtle and find for me it is easiest to come up INTO the wind
and as soon as the sail just starts to luff start pulling on the furling line rolling up some sail and then falling off again. I always seem to furl a bit to much and have to ease a bit back out.
Better than the reverse I guess.
If I was on a beam reach I would ease the sheet untill I could haul on the furling line.
According to CDIs manual and guarantee the foil will not twist even if you winch
against it. I've only done that once and it worked quite well although I find it easier to put my back into it and haul it by hand.
Of course my genny is only about 150sf so not much of a battle.
As has been mentioned here having your furling line run "fair" is very important. I have seen a couple of instalations that have made me scratch my head
I just finished reading that some roller furlers are NOT designed to be used to reef the jib
. See I learn something new here even when I'm not trying............m