You are now.. MM ha ha...Minch Man ha ha
from KFC,
Minch,
That looks like nothing but overly poured resin. It looks "black" somewhat so I'm not xctly sure in regards to the first pic. I found lots of that on my boat. Most of my solid wood stringers let's say were 8" high then they put that resin on it then placed the next stringer to fit height/deck. There was no chopped strand in it either to make the bond. Just resin.
Not sure what you are asking in the second pic.
When you place your splashwell back are you PB it to the transom.? When I took mine out it was so rotted I cannot recall that it was.
LMN. TX! Work is great.btw.