A lot of the cottage industry guys just don't have the space to leave them set up to dry. There are two ways to do it, messy or neat. Both will stop it from leaking. I'm probably the worlds worst (aesthetically) seam sealer and I have had the privaledge of doing it on two of my tarps. Just make sure all sewn through threads and the folded seams are covered thoroughly. I have tried the little brush that comes with the Silnet and the little foam brushes I use for grout sealer, but I am too impatient and choose to use the tube as an applicator. So far, no leaks.