Penis pump with weights attached?

I saw a video where there was a penis pump with weights attached. Hanging and pumping at the same time? Do any of the vets know of this?

I’d be leery. Anything tugging on the cylinder can cause a seal problem. So it may require high pressures to be feasible. Then, either ball suckage, dropping the cylinder, or erratic pressure readings and spikes become serious possibilities. All of which screw with electric pump calibration.

You can test this by steadily pulling on the cylinder during your session. I was not happy with the results.

Your thinking sounds right to me, planning to buy a pump soon!