Brett
I've had one fitted to the Haines for about 18mths now, they work very well, makes launch/retrieve a simple 1 man operation, also takes a lot of risk out of the operation. ( Have had mates and wife get smashed on the hand, wrist from the winch handle whilst launching )
Easy to install, all I can suggest is check out the length existing "D" shackle bolts on your boat and make sure the ones on the latch are as long, I had to chop into the boat to get the nuts on mine.
Cheers
Bill