Lots of threads on stand over height but no conclusive reasoning whether to measure it up to the family jewels or the pubic bone. Family jewels makes sense because as pointed out before, they are possibly the first to contact the top frame should you need to dismount quickly. That's not always the case (if the jewels are out of the way by luck) but I wouldn't chance it. Do the pubic bone supporters have a better reason beside it being easier to measure?
I am 5' 9 1/2" with a Fuji Absolute 2.0 19" hybrid bike. Sure, the 17" was probably my best fit but it was not on the LBS' floor and I got a really good deal with the 19". When I stand over the bike without shoes, my jewels brush over the top tube. When I put on sneakers, there's probably some but very little clearance (~.5 - 1 cm) between the top tube and the jewels. I can ride, control, straddle over, mount and dismount the bike comfortably. Now if I lift the bike so that it presses against the pubic bone (and not too hard btw) - then there is 1.5" clearance without shoes. Therefore, the 19" fits me fine if we go by PB method whereas it does not if we go by jewels measurement. I'm thinking of getting shoes with 1" sole thickness to add more clearance.
I ride for fitness in state parks / touring. There's always the fear that I may for that one time slip & fall or maybe crash into someone. In this case I may fall of the seat with bent legs onto the top tube. Even though it may happen rarely - that rare occurrence may be a very traumatic experience.
So my questions are: (1) PB or jewels to measure stand over and why do you say? (2) Does the 19" sound too big for me? (3) What are the typical sole thickness for bikng shoes? Is 1" too much?
Thank you all for your precious time.