Hi PoppaG, thanks for the good word inre: my screw-head and bottle cap idea for T-Stick holding.

It's advantage over the V-wedge on tub-lip method is that the stick is a lot more sensitive and light to move and can be moved in any direction too.

And the screw-head - I use a 1/2" O-ring now- stands up to a lot more punishment than the V-wedge.

And as I said before, it helps to use the cross-strings system and not invert the tub.