Any photos around of a vise on a cart?

I'm thinking of this 2' square, (probably larger) flat top cart I have, its about 4' tall with swivel casters all around. I would like to put some flip over / out feet on the bottom to keep it from tipping when in use. Then fold them back to roll.

I use a vise and porta band more than anything else and can't see being without it. I have seen some mount a vise on the trailer tongue but the V nose doesn't leave any room. I don't want it inside so what am I missing? Never used a pipe vise, would that be a better portable way to go?