I'm going to answer your question this way - so just give me some space to do so.
I really dislike it when I ask someone a question, only to be given generalities and the like. But, in this case, I'm going to do so, at first.
Any pitching surface that's a mess to work off of, is just that - a mess. In my opinion, any given method of doing this or that, off of junk, is wasted on the attempt to work through said method(s) and come to some conclusion that's both meaningful and worth the exercise in repeating.
You mentioned in your remarks about a mound that's in ideal condition. Any mound that's worked off of, in the later innings, soon has less and less quality. That's a given. "ideal" is subject to all kinds of moans and groans, subjected to who's asking who. But in the real world, workability is the gravity that draws a reasonable mindset for responding to your question, and that reasonability is what I'm going to assume from here on.
I've coached those pitchers that have grabbed the leading edge of the rubber with their cleats to literally "launch" themselves, while others preferred not to. I found it to be a matter of personal choice, or, one of instruction based on where and when that coach/instructor came form in his career. Some pitchers have a terrible time adjusting to any system or method that their coach believes is "for their own good." I never worked that way. I always took what the man brought to the field with respect to "as is" and worked form there.
If a mound is workable and the method suits the pitcher, I say go for it. It's more of a quality issue(s) with respect to personal comfort and repetitive performance more that anything. So as far as your choice of go-or-no-go, select a mound that you believe is reasonable and workable FIRST. Then use the delivery posture that you're use to and establish a baseline of :"feel" and results. In other words... how are you doing now before changing anything. Then go to this Hooking the Rubber thing and see if you add any worth to your presence. Just remember, you must use the same deliberate aggressiveness - or not, that you used without this method to give you a realistic comparison of the before and after.
Now if you're going to work of a piece of real junk- don't. Your apprehension will force to you do things that aren't natural to your appraisal process and your decision making. Don't worry about asking .. "how will I know coach?" Trust me, you'll know immediately, without question, and that'll be that.
Ok, so you've decided to go this route of Hooking the Rubber, and the surface that you've tested this new method works out to your favor. Now think, if you go to a field where the mound is junk, and this new method doesn't exactly work out the way you expected - are you gong to go back to your old ways? If so, what should you be expected to deal with? Can you adjust back and forth from one method to another? Will this adjustment take away a certain pitch or pitches in your inventory? Will you require more days rest and recouping if you have to go back and forth between methods? What else will be waiting in the wings?
If you have a coach who understands what I'm trying to get across, sit down with him and hash it out. See if what you're about to do is worth doing, and why?
sunagod76, I honestly want to do justice to your question because it's a serious question and I believe your insight is mature enough to go into some depth - if you want me to. Did I answer your question completely?