I found that suction cup pretty powerful, but it requires just a little pressure to get its seal started, and you have to get it on a smooth surface (not the edge of the tube). It will certainly lift the tube well and even survive some quick jolts, but notice you can't use it to rotate the tube vertically. So unless I'm missing something you can't tip a tube up from the ground using the suction cup
If only someone could make a mechanism that mimics that motion people make with their foot to tip the ringers vertically...
