I know my answer might disappoint you, but it's still a "no"... If you're short of sure winners, just try to establish the enough extra winners as you need to make the contract by choosing a method with the highest possibility. For example, you have 8 sure winners for 3nt, but you have two choices of finesse. Take the most possible one you think, and suppose you win, you have 9 tricks for sure, don't take another one. I know what you mean, it is very tricky, very complicated. That's why there are so many books discussing how to be a declarer. What we discuss-"make a plan" is a principle we should always follow. How to "make the plan" depends on the skill, both of us may not make the correct plan at most of time. But try to do it!