When I was laying down thickened epoxy for fillets on my Shearwater using the freezer bag approach I wished for a way to do it with a caulking gun. Apparently the good people at West heard my wish (or my rants when the freezer bags ruptured dumping epoxy all over the inside of the hull). While picking up supplies for my next kayak at West Marine yesterday I found that West now sells a thickened epoxy for gluing in caulking cartridges with a mixing spout. Even better, they sell empty cartridges that can be filled with filleting mix and used in an ordinary caulking gun. It will be a few more weeks before I get to test this system. Has anybody on the list tried it?