Mark,
I used an old water tank that is 60" x 24" with rounded ends. Found it in a dumpster, it had a few pin hole in it. I ran a solid 1" rod al the way thru the ends. Holes already there! Then made a frame and was ready to go! I have posted photos of it before on here, Just can't remember which post. You might find them if you do a search on homemade rollers. I'm just too lazy tonight to find it /forums/images/graemlins/crazy.gif I like to roll in the spring after the frost is out of the ground, and everything is nice and soft. Pushs all the rocks back down where they belong. /forums/images/graemlins/smirk.gif