People talk allot because its FREE
and most have no o_O experience of the method they discuss; even DLD has no experience or very little with clamping, which I may add doesn't need an actual clamp to perform! I originally coined them constrictors but it got changed to clamping to sound better.
Constricting can be anything which creates a tourniquet, so a cock ring which for some o_O reason seems more bearable to the same people who are scared of clamping (drunk) makes no sense at all, so they must be clueless to the technique or have ulterior motives.
Clamping aka constrictors are extremely powerful, and helped me create most of my 7 inch plus girth.
I never invented it, no one did in all honesty. Guys must have tried a tourniquet method over the centuries right? but no routines, exercises, or gains were documented prior to 2003 regarding this method of penis enlargement.
When I started experimenting with it, I used shoe lace ... no clamp was in my hands, that was later, and the clamp to me was very safe, because you can immediately get it off, and tighten up in increments.
You can do almost any girth method through a constriction technique to increase the intensity, this is FACT. Many men are all over not just these forums, but all the other penis enlargement forums with gains from clamping.
I have always recommended you do them at the best possible erection you can for the most intensity due to more blood being trapped, your working with more tissue expansion that way ... however I see no reason why you cannot gain with doing them using 50-60% erection, but ensure you kegel often and it may be wise to push some of that already trapped blood throughout the shaft with exercises like horses, SSJs, jelqs, whatever you fancy to help further expand and compact the erection at that percentage.