No tips but a user report...
Started using one yesterday
I'm having a little difficulty getting the length correct. If I have it short enough to lift the sail I then have difficulty getting low enough to engage the loop on my seat harness hook
I think this problem is a combination of not being flexible enough to crouch low enough and the seat harness crunching up and blocking the hook. Orrrrr it could be my bear gut bulging over the hook when I crouch down to engage


Plus I fall off the board if I'm engaged but not lifted and the sail is swung by the wind across the nose or tail.
Once engaged and I'm using the up-haul as designed I wish it was shorter so I could lift the sail a little higher.
However I want to keep at solving these problems as it does certainly take the back aching grunt out of getting the sail underway - a big positive

It also takes out the back strain when swinging the sail around the board to get it downwind.
Early days yet
Cheers Jeff