I use hockey tape. It has just a slight stretch to it, is tackier than electrical tape, and adheres to the bar tape better. Maybe I was using cheap electrical tape, but I always had a problem with it creeping back on itself, and the brake housing would stretch it further as it curves away from the bar. The hockey tape will not do this. Since it's tacky on both sides, I sprinkle talc on the outside to knock down the stickiness. It wears to a nice, smooth surface.