I've got the Vang and the topping lift, but since I usually
single hand everything, i rarely if ever touch either. In this is because topping lift is fixed at the mast and the vang is controlled from the
cockpit, which makes adjusting it cumbersome since i can't adjust one and the other at the same time, but have to move about.
I understand that using vang in heavy
wind can be beneficial to flatten the sail, but to be honest I also haven't had much need to play with it since I'm able to get
hull speed without adjusting it.
I still consider myself to be a
novice and know that I could sail better with more practice and more refined sailing technique