Question regarding clamping

I have been clamping manually.. Squeezing erect unit as hard as I can at the base(usually for 1minute sets).
Doing this for 10 sets, or 15(10 or 15 minutes total).

Anyways, since I don’t have the clamping totals.. I tried to clamp with a rubber band yesterday.. It gave me a good pump and it’s alot easier to do!!
Is this an okay way to clamp or do I require the original tools?

Id try and get a proper clamp, It’s easier to get off if something goes wrong.

But it works in the same way apart from that?

And to do proper clamping I have to have it on for 2 x 10 minute sessions right?( full erection level)

Lionking11,

Are you new to PE.

If so, I would not be clamping so soon !

If you are well then go ahead

I’m not that new. Being jelqing for two months, and manual clamping for 3 weeks now.. Is it enough?