I've always used the alumiun foil, but been talking to my friends about using a wire loop instead of a crane swivel. Take a small finish nail and make a wire loop around it. Make about three twist and lay the wire ears flat (to fit inside the poneyhead) Now powder paint and clean the loop just like you do the hookeye. Next use a quality sampo swevil with split rings on both ends. Attach one split ring to the wire loop and the other one to the blade. Quality swivels cost a lot more than the crane swivels but will spin better. It doesn't matter if the wire loop gets paint in it as it is easy to clean out. Going to try it on some bigger sizes horseheads (1/4, 3/8) and see if I like it.