When you put on the cock ring how long do you keep it on for?

I do a variation of this:
After a round of jelqing ( This is the fun part ) i get fully erect with lots of Kegels. Then to bring the erection down to jelqing size I clamp it (with my hand) at the base. And do the extreme ULI variation routine while doing Kegels. The erection goes down, I jelq then repeat the process.

I get a big swell there is little danger in over doing it. And I have very good blood flow and my penis doesn’t turn purple. With the exception of the extreme ULI variation.

The only problem is i tend to ejaculate to often but it breaks up the monotony. And keeps me looking forward to the routine.