Basicaly @fredtc, it's a minefield!
Imho it's simple, test to give a true setting on zones with the your best power. Then do your threshold L3/L4 stuff in position but be ok about having to sit up to finish them. Leave L5+ training to the road bike.
@onyerbike started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Basicaly @fredtc, it's a minefield!