Thanks Testman. For the record, I beat my (fixed) course PB last night, 3s off my (geared) SB of 2018. Little correction in case the guys at procyclingstats are watching
that was a good ride last night by you, thought it was slow with the direction of the wind and wet roundabouts. I got caught by matt Gibson (pro?) and he was on a road bike after 3 miles - most disheartening.
K-Edge Gravity Cap would probably work on your build. The TT mount would work too, but it's spendy if you don't need the display that far forwards.