General theory of jelqing is to do a set of X reps of regulars, then a set of V's, then repeat this sequence two more times. I strongly believe that this idea came from lifting, not PE. Do a set of bench presses, rest for a minute, then do another set, etc. We aren't lifting weights when we jelq, and we are not building up lactic acid in our smooth muscle like we do when lifting and working our skeletal muscle. I think it is much better to do one long set of each exercise rather than sets. Number one reason is you are building up heat in the area you are concentrating on (heat is good). If you are doing your jelqing in sets than when you move on to the next exercise, you are letting that area you were working to cool off and relax. This means when you come back to your next set you are sort of starting all over again. Whatever number of regular jelqs you do, or V's that you do, I think it is better to do them all at one time. Max out your stress to those cells in the area you are working, while maintaining the highest level of heat in that area.
Another theory regarding jelqing is that you shouldn't do it on back-to-back days. I believe this theory also came from lifting. And again, for the same reasons I mentioned above, I think this is not the best way to maximize gains. What I do is one day 1 I do X number of UJ's. Because they are more intense then regular jelqing and I am doing a large number of them, that is all I do. The next day I do X number of UV's in one long set. I then repeat day 1 on day 3, and repeat day 2 on day 4. Then I take a day off. I think that this hits your three key areas, your two CC's with the V's, and your CS with the regulars. Since both exercises hit all three areas (each one hits a particular area more effectively), you are maximizing the stress levels to each one. I am considering doing two days in a row of UJ's, followed by two days in a row of UV's, but I have only been doing the above schedule for a few months so I won't change things up just yet.
I am a slow gainer, so any gains I make are significant. For quick gainers I think the above schedule might really do wonders for their girth.
Some people prefer lighter grips to more intense ones. I absolutely feel that the max grip intensity you can handle is the best one. A lighter grip is not going to push the maximum amount of blood up your shaft and into your glans. In addition, a lighter grip will not stress your smooth muscle cells at a maximum level. Finally, my best CS gains have started to come when I actually started digging my finger tips into my CS as I did my UJ's. Rather than have my finger(s) gliding over my CS as I jelq, I now dig the tips of my fingers into it. This has toughened my CS up as well as enlarged it.
Naturally, your Positive Indicators are crucial to what you do, how many you do, how intense you do them, and how often. My PI's have been fantastic since I started this routine. There have been an occasional day where I felt I needed an extra day of rest, so I took one. That is the whole purpose of reading your PI's. If part of your PI's are going south on you, but you ignore those indicators, then you are asking for trouble.
I am not a doctor, I have not studied human anatomy, etc. I am just a guy who tries to think outside of the box, based on what I perceive to be logical deductions. There are some (perhaps many) who will disagree with part or all I have written here, but for some at least, I feel this could help jump start someone who has been stymied or unable to get their girth moving in a positive direction.