Has anyone installed a ProFurl Boom Furler. If you have, did you have to use the solid vang sold with the unit, or were you able to use a different model that you may already be using on your current boom. Specifically, can you use a Garhauer vang with a ProFurl unit. I e-mailed ProFurl about a week ago, but so far no response. SailNet sells the unit, and I have asked them as well, again with no response. Thanks John