are you really gaining anything??? maybe an inch or 2. Not an issue worth asking about. either do or do not.
but since you brought it up. I did see some platform pedals someone posted about on here that actually fold up flush with the crank arms. No idea what they are called or how much they cost.
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2010 Kestrel RT900SL, 800k carbon, chorus/record, speedplay, zonda
2000 litespeed Unicoi Ti, XTR,XT, Campy crank, time atac, carbon forks