Yeah, the Sailworks Quicktune line are still working well for me, did finally replace the line with 1/2" Amsteel line, the original line got hard with exposure to saltwater and rinsing with fresh water did not help after the first couple of times. Amsteel line never gets hard in saltwater.
I have been using the Sailworks harness lines ever since they first came out in the formula racing days. Eventually the tygon tubing will oxidize and get brittle. I just raplace them. Easy by using a piece of string trimmer line with a hook crimped into the end, to pull the rope through the tubing. Hard to push rope. Easy to pull rope.
These are by far the easiest to adjust on the cleat, and by far the longest.
I've got Chinook race lines but even at their longest setting they are at almost the minimum length setting here. The chinoo,k cleat is also often very difficult to loosen to adjust.
They are loose on the boom because they don't have velcro on the attachment. I have to shimmy them just about every jibe. But, that also means I can tweak them fore/aft very quickly to get the perfect balance.
I've only used them on the IQFoil setup but they may be good on fast freeride setup as well.
Tried two different models from DaKine. One with a cam style buckle and one with a v-cleat. Prefer the v-cleat model. At least for me. Quicker and easier to adjust on the fly. Use either the Chinook or DaKine mono line for windsurfing. Wasn't sure what length I would prefer for foiling. So went with the adjustable. Ends up I change lengths while foiling. Upwind, downwind, overpowered, underpowered. Haven't used adjustable since the first days of windsurfing. 90Kg friend refuses to use mono lines. His feeling is it puts too much of a point load on the boom. He has broken booms at least twice. Once at the tail and once at the head. So far, boom is the only piece of gear I haven't broken. Did I just Jinx myself?