Ok I know there’s got to be someone here thinking about this. Ironman pro series is requiring a GPS tracker (90x80x24mmround) to be stowed within 10cm of the collar (vertically) on the back of the trisuit. I know this is going to be highly individual, but where would you guys place it? Is there even a benefit to trying to move it?
Zoot tri suits have an ice pocket in back just below the collar. Some others might as well. It would be very easy for you to take your current race suit and an old jersey you don’t mind getting cut up to your local alterations place and have a small pocket added. If you put it on the outside of the suit, you might spare yourself some chafing, although inside would probably work fine as well.