travel trailer roof repair - discovery phase

I called the dealer where I bought my trailer and spoke with the service center repair tech about my leak. The cost of resealing my entire roof would run around $300. Way more than I'm willing to spend. Repairing the hole would run around $60. Still too much. I gotta give the tech credit for one thing. He described the entire repair process to me so that I could do it myself. Not that I ever thought fixing a leak was a hard thing to do. Sometimes, if I can afford it, I like to pay someone else to do all the work for me. The benefit is two fold in that I can spend my time doing other things, and I'm not to blame if it was done wrong. The cost will be around $20 (half for the dicor and the other half for the denatured alcohol) and take about an hour. Everything sounds easy enough to do, but we'll see.