Best shoe type for running on sand?

I am doing sprint this weekend, where run (3.8 miles) is entirely on sand. Does anyone have any ideas as to what type of shoe would be best.

Options include several different types of race flats (saucony, nike, asics); nike lunar trainers (with wide base); old air kukinis (1st generation).

Advice would be appreciated

I find running on sand easiest barefoot, although if you go too long then you can get some serious blisters from this. For 5k that shouldn’t be a problem though.