I've got an old pair of Dan Bailey stream cleats like these that I used to slip over my felt sole boots:




They worked pretty well, although at $79 these days, probably a bit much. I've borrowed Korkers strap-ons and they were very good (better than the Bailey's); seen them for $69 on eBay. You could always get carbide studs and screw them into your boots, or the screws that motorcycles use for ice racing (don't wear as well as the carbide but a lot cheaper and easy to replace)

Regards,
Scott