I am looking to make or find a roof rack system for my Blazer. On the front the standard Raingutter rail will work great, but how do you all suggest to mount a rail to the fiberglass for the rear? It will be mainly using to carry two 17' canoes, weight should not exceed 180-200 pounds. Again remeber this is on a budget, if I had the money I would pay someone to figure it out for me. Gone Large and Loving It.