Method of temporarily attaching casters to a stack of truss for transport.
May be just a platform with wheels,
http://www.christielites.com/rental2.php?sectionid=6&code=21&name=Road Cases&linenum=0&totlines=-1
http://www.touringcustomproducts.com/products/?p=88
or purpose built to attach to the truss:
http://www.thelightsource.com/products/18/view
http://www.showsolutions.com/pro_series_accessories.php
May be just a platform with wheels,
http://www.christielites.com/rental2.php?sectionid=6&code=21&name=Road Cases&linenum=0&totlines=-1
http://www.touringcustomproducts.com/products/?p=88
or purpose built to attach to the truss:
http://www.thelightsource.com/products/18/view
http://www.showsolutions.com/pro_series_accessories.php