muz720 said..
Still if wanting to go upwind need to remember need power to burn, if under done it's not going to happen.
Yep, power and speed will help the fin generate lift. Try and feel the load on the fin and keep it constant and smooth to avoid spin out. A quality fin makes a difference, it'll give enough lift upwind whilst being controllable off the wind.
Sail trim is tough to get, oversheet and you may feel like the rig is falling backwards and losing power. Undersheet and you won't have the power you need. I find I use the front arm a lot to trim rather than the back arm. Harness should do the sheeting and use the front arm to trim and keep the rig upright.