Jeez, it is that hard? Decent fixie straps on a pedal without teeth or pins works fine, and you get a solid foot retention. I ride with the Retrogression V2 straps on a few bikes, but there are a variety of different nylon straps on eBay, Amazon, online. Powergrips are harder on shoes, the resin fabric tends to leave black rub on the shoe surface.

This is what purefixcycle offers, as example: