Its more that it needs to poke above the roofline the more the better but the taller it gets the bigger the target for overhead impacts and they dont work well when broken
Yeah, they are cheap. I have no idea how long OEM last - bought it at 170k with a bad one already. I'll ask around the lib sites.
For the cb, thanks for the tips - I didn't know about furthest from batt. I do have a pretty decent swivel bracket and an HD spring so I might just pull the light and install underneath it with some 'massaging' of the light housing.
You mean the tip should only sit a tad above? So, most of its length alongside the RR part of the body could be fine (SWR depending of course)? Mebbe I shoulda got the 3 ft.