Good afternoon, folks. Just looking for a little professional advice. We will be starting an excavation at the base of the bluffs and along the sandy beach of Lake Ontario. Does anyone have any tips re: working in pure sand? Our usual approach would be 1x1m test units, but we are wondering if trenching (hand-dug, of course) might be a better plan. Vertical control of the artifact locations is not imperative as these are secondary deposits at the very best. I see depths of deposits being minimal, perhaps 40 cm at the most.  
Any suggestions would be greatly appreciated. 
(at least screening will be a breeze!)
Thanks,
Katie Hull