Seal off/plug thru hull?

[P69]

What is the safest way to seal off a thru hull. I have one that I intend to remove next haul-out. Should the hole be plugged with something or filled with glass/epoxy?

Thanks

[S/V Deo Volente]

You should grind a taper to the hole and build a patch with mat and epoxy. West System has online manuals that give good guides.
http://www.westsystem.com/ss/assets/HowTo-Publications/Fiberglass-Boat-Repair-and-Maintenance.pdf
Here is a link to a video to give you some ideas
http://www.youtube.com/watch?v=i9hfpOCnzEs

[P69]

I had a hunch that was the proper way to patch. Thanks for the hyper inks to videos.