Just stock up on a bunch of cleats when they're on sale at Wiggle surely? Even full price they're about £10 a pop. £5 each time you wear one out hardly seems an expensive option for a few months use - you also get spares when you buy new pedals etc. etc. - it's not hard to collect a few spares...
EDIT: Assume you're talking SPDs - rather than SPD-SL?
Just stock up on a bunch of cleats when they're on sale at Wiggle surely? Even full price they're about £10 a pop. £5 each time you wear one out hardly seems an expensive option for a few months use - you also get spares when you buy new pedals etc. etc. - it's not hard to collect a few spares...
EDIT: Assume you're talking SPDs - rather than SPD-SL?