MOTM

I have found that open racks on wheels are very helpfull. I have 2 right now. One is a Quicklok that is tubular with the lower half sloped. 

see http://www.synthony.com/Products/quiklok/QLracks.html

Another good rack I have found is BUD industries. Cheaper, and they have strong bases (no tipping or bolting) that can also have wheels. 

see http://www.budind.com/products/rr-1263series.html

Rack 'em!!!

...jp