I did misunderstand your question. Even though you can not practice on T11's, below are calculations that should suffice for you on all green speeds. Very little dialing in will help your personal ball preference.
Add or subtract the elevation then multiply it times .75. That will get you at the cup on T11's. For slight up hill add 1-4 feet, larger lifts add up to 4-5 feet
Opposite for down hill putts
Each green increment is .05 away from each other
standard x .9
fast x .85
very fast x .8
TM x .75
legend x .7
Champion x .65
You've been playing as a legend,or T12, as of 3/11/17, which is the multiple of .7
Good luck