Simply adding layers of tape to the shoe of your stapler would have prevented that ! I too learned that the hard way ! Saves a lot of sanding time too !
The next one will be better !
My reason for using it was to get a filled weave with the wetout coat and then hopefully just one fill coat to fill the weave of the peel ply. That kinda worked out but I definitely didn't think it was worth the hassle and in the long cost me more time.
So now I just put down subsequent fill coats within 24 hours of each other and sand it after they're all cured.
If you haven't already done so I can't recommend enough connecting your ROS to your shop vac. Use a bag in the shop vac or else it will plug up the filter quick. Without dust I don't mind sanding the hull at all.
Alan