Water crazy GSP mix seeking home that matches energy level

Hi everyone-
I just met a wonderful GSP mix (gsp x lab?) today at a local rescue and thought I would post a little blurb about him here. He was found abandoned with several puppies and is in great health with a great attitude. He loves to run, run, run and likes to play and relax in his pools. "Gunther" DOES need a lot of work in the manners department, and really needs a home that will work with him both mentally and physically--I think he might make a great future dock dog...
Here's his page at Petfinder http://search.petfinder.com/petnote/displaypet.cgi?petid=10901774[url][/url]
He's currently living at ARF in Muncie, IN

Not sure what looks like a mix in him. Maybe a GSP rescue could get him out of there

He has a super thick body along with a labish-tail--definately not a pointer tail! Just a guess though...