I hunt this lake quite a bit, and mostly for divers, ringers, bills, and buffies, but managed to bag a few mallards as well. I've never had an issue with break ins yet but there is plenty of shattered glass in the parking lot.
As far as the stumps go leave the motor at home I've never had an issue with oars but I have seen some stumps slightly submerged with rebar sticking out of them motor or not that could mess a boat up real quick.