Mizzen on a Powered Sharpie

[Wavewacker]

I'm interested in building a 26 to 30' Bolger powered sharpie, these will go with a small outbaord. I'd also like to do some sailing (not racing...I can resist, just moving along when the wind allows, slowly) and wondered if a mizzen can be incoporated for such a boat? Would it be better to go with the sail configuration and power it (probably would) with most cruising done under power along rivers. What say you?

[Wavewacker]

Hmm, well, not a mizzen sail behind a main or the third sail, but a sail at the aft, by itself.