Never heard of Kwik Poly, but I have used GitRot and it worked good. Gitrot soaks into rotten wood and hardens it back up. Don't know how strong it would make it. The transom was rotten on my V when I bought it, cut it out from the inside and replaced it all. Hope the kwikpoly works well for you. Let us know!

If its wewt up top its going to be wet at bottom!! Do as said drill a few holes in the bottom and let drain before doing, then wet some golf t's with the resin an hammer them it when dry cut iff and top with resin and your done

I've used both, and KWIK POLY wins hands down. It costs a fraction as much, soaks into the wood ALOT deeper, and hardens up alot better.

I've used git rot in the past and thrilled with the results. It was also ridiculously expensive compared to the kwik poly. I was hoping to get it before the weekend but unfortunately I didn't. Hopefully I'll get to cut into the transom a little this weekend. I'm itching to get on the water.

I cut the cap off today. The wood was wet across the top and a bit rotten but not as bad as I was expecting. I drilled a number of holes down in different areas and I found the transom was moist but nowhere near as wet as I was expecting. I found that when I drilled down it took about 2" before I hit something real solid. Right now I have the infrared lamp on it drying it out.

I suggest that you get an auger bit and a chisel and remove all the rotten stuff... then drill lots of smaller holes deep into the good wood and refill with a pourable transom product

I was thinking about that, but before I do any chiseling or drilling I'm going to dry it out and assess the damage.
I'm stuck right now. I bought this boat to hang my 130 on then the engine on it turned to be good but the transom was messed up. In the mean time I got a smoking good deal on my 22WA. Now I've got 2 boats and 3 engines. The kicker is that a few V20s needing repower have come up for sale which is what I wanted all along, go figure.
On it's dried out ill drill it and test out the kwik poly and go from there.

Nothing wrong with having a few boats around. Interested in hearing your results on the transom.

If it were up to me is have a lot more than 2 boats and 2 cars.

I painted the top of the transom with the kwik poly today and it solidified it right away. Next step will be to drill down through the core and pour it down. So far I'm happy with the results. Dried quick and hard.