Please play nice, folks. Everyone has the right to an opinion. Please state your opinion, and move on, allowing the OP to make their own decision. Well mannered discussion is fine.
I have not done hordes of fiberglass resin work, but I have built a wood strip canoe using epoxy resin and fiberglass cloth. It turned out great.
I am also in the midst of repairing four 2 1/2" holes in the Trillium
I am working on, where the various service hatches were (city water, gravity water fill, 120V cable, grey water outlet). I followed techniques often used in repairing boats, where I tapered the fiberglass from near 0" at the hole, out about 1 1/2" to flush. After sanding and cleaning around the inside of the hole, I then used polyester resin, and laid a layer of glass cloth on the inside, which provided a backer for a full repair from the outside. I then cut out four pieces of fiberglass mat (not cloth) of varying sizes, each saturated with polyester resin, to fill the hole in the shell.
This last part was done yesterday, and so is where I am at now. Today I will sand the patch flush to the shell. I will then prime the area, and use an epoxy filler to level the patches, and then fair the hull. After this, I will prime again before paint
I am also using the epoxy filler to fill hundreds of old screw holes, as it provides good strength as well as good adhesion.
I will be posting photos on the rebuild thread once I get it done. Pretty darn confident it will all work out great.