As best I can recall, for the epoxy, I used105 resin, probably 206 hardener, 406 silica filler, and whatever graphite West offered. I don’t believe that West G-flex was available back then and as Mike mentions above, I think it might work well. Alnong those lines, TotalBoat (see Jamestown Distributors) also makes a flexible epoxy similar to G-flex called FlexEpox which I have used to good effect, although not as a fabric matrix.
As to method -- I painted a clear coat on the hull, laid the kevlar tape on, then applied more clear epoxy to saturate the tape. The two following coats of epoxy had graphite added to give the black color. (Graphite also apparently makes sliding over rocks easier – I don’t think this aspect of graphite make much difference in this application.) The first two coats, clear and the first black, I did not really mask off – I just went a bit beyond the kevlar tape – I did roughly mask the area to protect against gross drips, etc. I cleaned up/lightly sanded between coats. I neatly masked off a slightly larger area for the final graphite coat. Also, as I recall, before applying the epoxy, I lightly singed the area to be epoxied with a blow torch – having read somewhere – don’t know where -- that doing so improved adhesion – in any event, at least it apparently did not hurt anything.
I forget who I bought the Kevlar tape from, but these folks seem to sell it by the yard --
https://fiberglasswarehouse.com/kevlar-tape -- whereas most dealers only sell it by the very large--and therefore expensive—roll.
Kevlar is quite difficult to cut – use good sharp scissors. I found it useful to put masking tape at the point where cutting – the Kevlar tape is somewhat loosely woven and wants to fray; the masking tape holds things together while cutting -- see the picture in my earlier post.
The epoxy putty can be had at almost any good hardware store or big box store – often with glues, and often in the plumbing department. Ask for an epoxy putty stick.
As to bow/stern tie downs – our Royalex Old Town Camper has molded handles which, while not elegant, are serviceable.
My deceased Mohawk had tiny little eyelets which were inadequate, so I drilled two holes into the aluminum deck plate and knotted a bit of bungee cord in place – again, not elegant, but it did the trick. See the pictures in my previous post.
Our wood/canvas canoes have small wooden carry thwarts near the decks, which make good tie-down points when car-topping or for attaching a painter -- here's Jerry Stelmok's model 1889:
I don’t know if the Chipewyan gunwales are amenable to attachments, but if you can make and attach a couple of simple carry thwarts, that would be the way to go, in my opinion.
I would question whether food coloring would be compatible with epoxy. Powdered pigments are available that are intended for mixing with epoxy -- see Jamestown Distributors or West Marine or other purveyors of marine epoxies. It is not likely that you will get a perfect match, which may be okay. But instead of hiding the repair, you might consider making it a feature with a complementary or contrasting color.
Good luck, and post pictures when you are done.
Greg
