Portable Waste Tank Recommendation

get one that is easy to maneuver by hand and that has a handle you can attach to your truck or other vehicle to haul through the campground. The last campground I was at had grey dumps throughout the park, so I only had to haul gray water a hundred yards or so. The one before that only had the single dump near the exit of the campground. If I had not been able to attach to truck, I would have had to haul water nearly a mile. Water is heavy and sloshes around so that the tank is not the easiest thing to maneuver. I have a Barker 30 gal. I found it locally on craigslist for less than half retail plus no shipping.