If anybody needs to increase their dogs self esteem then I could bring Sage. She loves to swim but is lousy at it. A lab can typically do several retrieves in the time it takes her to do one.

Or she can annoy Todd in the drifter to the point where he throws a stick into the middle of the river where she will swim, swim, swim, losing ground the whole time, until she gets dumped into the Pacific

That's yet to poop her out though