I'm looking at a dolly for moving a few container trees. I dabble in growing plants for my landscape operation, not a full scale nursery. Some of the plants I have are in 45 gallon containers (Hemlocks), but mostly 30 gallons (Japanese Maples). I was curious if anyone knew how much a typical 45 gallon container weighs. My soil mix is mostly pine bark mixed with a little top soil and sand. I'm sure the weight would depend on how wet the plant was, so lets say it was watered the afternoon before. The dolly I'm looking at lists an 800 lb. limit, although, after reading a few reviews, I'm not sure I'd trust it with more than about 400-500 lbs. Here is a link to the site: http://www.handtrucks.com/hand-trucks/specialty-hand-trucks/tuffhandlerhandtruck.cfm#ReviewHeader Any help or advice would be greatly appreciated.