I also measure contact points from the sit bone position at the rear of the saddle. From woodworking I learned about "story sticks". One length of wood that holds all the needed measurements for a project. I rest the end of mine on the DS pedal spindle with the pedal in line with the ST. A pin on the other end rests across the saddle at the sit bone position - checks saddle height. I then rest that pin at the sit bone point with the stick reaching across the bars. A mark on the stick shows where the back of the brake hoods need to be (regardless of TT length, stem length and HB geometry). Holding the stick parallel to the TT helps measure saddle to bar drop.

I set all my bikes the same and they're all comfortable. My frames range from 56cm to 61cm with a couple of mtn bikes that talk inches. Then, again, I'm such a young'n it may not matter.

A friend is a trained and certified bike fitter. I saw that he measures reach from the front of a saddle vs the sit bone position. "Are all saddles the same length? I measure from where the sit bones are." "Ah, that's what they taught us." Hmmmmm.

I was talking to another certified fitter, Northeast regional business and reputation, years of experience. We stood next to my Raleigh Pro - fist full of seat post showing, 1 1/2" drop to the bars, all day comfortable. Sez he "Of course you know that your frame is too big for you." Ah.....

I'm somewhat skeptical of trained, certified fitters.