Am going with rollers. The trailer dlr sells Loadrites, all price levels - Load Rite, 5-Star, and Aluminum I-beams. I give up a little strength with the aluminum. Also, the aluminum model has aluminum rods to hold the roller assemblies. The 5-Star model has galvanized steel to hold the roller assemblies. For you gents that have some experience in whether to go with aluminum or steel, I'm open to your valued opinions. Thank you.