I tried putting a black plastic trash bag on the trailer and driveway to catch the drips but it just kept blowing away or getting stuck to my feet. I'm going to sand the gelcoat off the trailer, and I had to get another quart of gelcoat but I'll get more on the boat.
So far I've used two quarts of gelcoat, one of them is probably on the trailer and driveway, two gallons of resin, a couple cups of 1/4 chopped strand, 7 yards of 1708, a couple yards of CSM, two quarts of cabosil, multiple mixing cups and multiple brushes.
I hope this quart of gelcoat I ordered is the last one I need for the repair.