I have the back rest on both of my Waves. Its great it was a little tough to get the end caps out they are rivited and siliconed in. I drilled the rivits and then worked it until it came out then cleaned the scone out of the cross bars. I have the pins in one and the screws on the other I've taken both off and put them back on before but no need to unless you are racing (and I can't seem to rally any adult Wave owners around here to race) or there is a space problem.I also have the Hooter on one and its great for off wind its a big difference. I like the pins the best but sometimes the pin slips out so you can put nylon slip ties on and around the back rest bars and that works but the screws are fine too they can back out also so watch for that.I attached a line around the backrest and the cross bar and atached my blocks to those for my Hooter sheets so I don't sit on them when I getway back on the hulls.
Mark