I've been thinking a lot about the same thing.
I don't think you want to cut the handles off. That would make it a pain to carry around.
At first I was thinking of some kind of PVC square I could just sit on the top. But it wouldn't be secure.
Now I'm thinking about crossed PVC to hold it on the rim and a hose that comes down around the middle of it that has some kind of sprayer head or spinning arm. I haven't figured out what I want to do there yet. But it would look something like this:
http://youtu.be/Q-jgmgbwvg4. (The build starts about the 5:30 mark)
There has to be a better way to do the spraying though.
Edit: I was looking at blickmann's (
http://www.northernbrewer.com/shop/blichmann-autosparge). Now I'm thinking of offsetting the cross on the side and running a tube down from it with a float on it like the blickmann design but without the float control valve on it. That might work better for my long range recirculating plans.