Congrats on the deer!!! Ya see what happens when the bullet goes where the scope is looking?
You are doing better than I am this year!
Instead of using PVC side branches in the 4" pipe, get some 1/2" or 3/4" black poly pipe. A little bit more flexible, and you can drill holes in the 4" pipe with a unibit.
Maybe Rex is leaving the boat there for structure next spring......
Good news about the culvert. My concern about a leak is around that rock that was showing in the pond bottom. Time (and water level) will tell. My pond was iced in before I left for Wi. but today it was 50% ice free.