Lab/pitbull mix (Brainerd,MN)

It's with a heavy heart that I even have to do this.
I'm looking to rehome my 6 year old dog named Clyde.
He is neutered.
Clyde loves cuddling, playing in the lake and mud, fetching balls, and absolutely loves tennis balls! He is a very loving dog and I just want him to have the attention he needs.
Clyde has came from a ruff past so he does get scared especially to guns and sometimes men, depending on who it is.
One con about Clyde is he pees when he gets scared, and has always done it before I even got him.
Gets along with most dogs but needs slow introductions with males.
Does well with older kids 10+, not sure about younger.
Has no history of biting unless you're playing hard with him, then he'll nibble.
Please only serious inquiries only! Rehoming fee does apply.