Yeah, but
Keep in mind, setting the rig to a specific tension is only part of the job-you could do this and have the whole rig off to one side.
You can use these settings to start with with, after you establish the top of the mast is in the middle of the boat, but by the time you are through final on the water tuning, you have not saved very much time, since final tuning takes place while sailing in enough breeze to load the rig up (about 10 knots TWS), and you need to look at the rig on each tack to determine if the mast remains in column, or sags off at the top, in the middle or the lower section, and that the lee (unloaded) shrouds are not too loose, etc....
The guidelines we have established on previous posts deal with this process in more detail.
I guess the point is there is no way to avoid tuning while sailing (if you want it really dialed in)....
Cheers