I'm considering purchasing that same roller, but for compactin the decomposed granite that is our driveway and most of the roads around here.
Just driving on it compacts it well over time, but a roller might help considerably after grading and applying new material.
I would just be pulling it - with 32 gallons of water and its weight, it would be just under 430 lbs. total, possibly not heavy enough.
I considered making another concrete one like I had years ago, but it can't be made lighter for moving it elsewhere.
Since a gallon of water weighs 8.345 lbs, and a C.F. weighs 62.427 lbs, a C.F. contains about 7.48 gallons.
Therefore, concrete of the same volume would be 32 gallons/7.48 gallons per C.F. or 4.28 C.F.
Concrete is about 145 lbs./C.F., so same size concrete would weigh 620 lbs. All the time!
620 (or maybe more) lbs. might compact better, but pretty much stays on the ground and on your property.
My old one was about 1,200 lbs. That's why I no longer have it after we moved nearly 2,000 miles!
This is probably more than you wanted to think about, but gives you an idea of what it would take to move either water or concrete roller of this size.
From the picture and description, it looks like the frame would never withstand being lifted when the roller is full of water.
Hope this helps.
Mark H.