Have you looked at Speedplay Ultra Light Action pedals? Lots of free float, which allows the knee/ankle to find its own position, rather than being locked down.
A stiff-soled shoe means you aren't losing energy into the flexing of the sole. More energy is transferred to the pedal.
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RIP 01/08/25...2022 Trek Supercaliber, 2018 Storck Fascenario.3 Platinum, 2018 Trek Procaliber SL Singlespeed, 2017 Bear BR1, 2003 Time VX Special Pro, 2001 Colnago VIP, 1999 Trek 9900 singlespeed, 1977 Nishiki ONP
Last edited by Eric F; 05-06-20 at 01:28 PM.