http://www.harborfreight.com/4-1-2-half-inch-diameter-suction-cup-40993.html
These? Only $4 now.
The tank is around 600 lbs.
Suction cup rated at 80 lbs each.
4 guys with 2 suction cups each would be 120 lbs per guy. 6 x 80lb = 640 lbs rating on all the suction cups. We moved it in without any cups but it was scary especially trying to sit it on the ground orstand without breaking your fingers.
What do yo think? Will these handle moving 600 lbs off the stand and 25 feet to the truck?