Need to build a concrete land roller to tow behind mower or small tractor (Help)

We have 4 acres which I need to plow/till, roll and seed bermuda grass. I have 3 riding mowers and a Kubota (16HP) tractor. I need to build a land roller which can be towed by one of my riders or tractor. I currently have a form tube 10" in diameter by 48" length which I hope to fill with sakrete and use as a roller. Any suggestions will be appreciated and if anyone has PICs of one they built I would appreciate them.



Thanks in advance and have a great year.

Red Cox