After Zipp2001's reply, I'm convinced that going front brake only and spending more time practicing my turn around technique is the way to go. I'm still learning how to race this event and have been improving my times every year for the past four years. I was 12th in the 5k and 10k TT races this past season at the National Senior Games. It seems like fixing all of my technique mistakes might get me a top 10 finish in the 2019 games, at least that's my goal. I'm pretty sure that I have been braking way too soon coming into the turn around and using primarily the rear brake. Not good! If I'm going to brake at the last possible moment and therefore brake hard, I want to know the proper technique.
Tsapp