Improved methods of treatment of diseased or occluded vascular grafts in patients having undergone coronary artery bypass or other bypass surgery are disclosed. The armor profile is undulating along the length, and the armor profile has a band thickness and a web thickness. The device can protect the cable connection to the electronic equipment by transferring mechanical load placed on the cable to a strong rigid location on the equipment or any fixed point. In certain preferred embodiments, the present invention uses taper or wedge geometry in both the X-Y and X-Z planes along the length and separately along the depth of the limb cup engagement with the archery bow limb. An enhanced portable locator operates in a manual or automatic mode to receive locating frequency information transmitted from the boring tool transmitter including frequency updates. Information from the neighbouring cell list information for the flagged cell may be removed, in particular for a limited period of time.