If you want platform pedals that your shoes won't slip off of no matter the weather, look no further than a set of Wellgo BMX pedals. Or some other brand of BMX pedals that you like the look of. The studs on BMX pedals make them the next best thing to clipless. I rode those a while before settling on Shimano SPD's, which are a very generic and super capable clipless system. Toe clips are for troglodytes.
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It's all downhill from here. Except the parts that are uphill.