We've been using the RPM Hand Rake (http://www.rpmhandrake.com/) for consolidating and moving piles of cut blackberries and raking up the debris around arundo cane stumps. it works much better than a pitchfork or garden rake because the long tines don't get caught on the stumps. The handle was too slippery but wrapping some baseball bat tape around it fixed that problem. The rake is not cheap but it increases our productivity significantly. You can buy it through Amazon or by contacting the rake designer if you want to try to negotiate a bulk purchase or get a non-profit rate.