Pedal Patch! This is what I did with my old Sidis But with a piece of hard rubber sole material that I got from the local shoe repair guy. I cut a forefoot shaped piece and attached it with Shoe Goo. Found a good place to put the slot and cut a slot. All Good.
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I don't do: disks, tubeless, e-shifting, or bead head nymphs. But I do hate all e-bikes.