A tip I often share, when applying epoxy.
Check your seal coat, before laying down the cloth. Anything on the surface, that you can feel, such as dust imbedded in the epoxy, must be removed. I Scrape with a razor blade, don't sand.
If left, those particles will lift the cloth away from the hull. Creating a high spot. Not good when you sand !
One more tip.
Apply the wet out coat and let it cure, 3 to 4 hours, make sure the cloth is stuck to the hull, and won't move, when you add fill coats.
Add fill coats, while the previous coat is still Tacky.
This greatly reduces runs. This works.
Take it from a guy, that has scraped far too many runs in his life !
The Best of luck glassing !
Jim
PS. Your hull looks great! the seal coat will make wetting out the cloth go faster. OH, Don't walk away, after wetting out the cloth. Out gassing is your worst enemy. Bubbles will pop up when you walk away !!!