Firestick hood mount, Antenna geek needed.

behind the cab.

 

The best place for best performance is always going to be the middle of your roof regardless of what other people might say. I know that's not what you wanted to hear.

 

not being a smart *** but if you ask and want to really know, then you got the right answer.

I am not a fan of any hood antenna for a number of reasons but the best location is as far away as you can get it from where you sit. It has nothing to do with RF but RF exposure.

 

I’ve had that mounted for years on my 2004 Dodge CTD. It’s worth next to nothing.

A Little Wil on the roof is NASA by comparison.

 

Not quite sure what the question is but you'll be giving up 80% of your performance by making that switch.
You said you have a hood mount and those mount in one location only so there's no question to ask about where or how to mount it because it only mounts a single way probably using a single Bolt. Your question revolved around the best place to mount an antenna and none of the options you gave us fit the criteria of the best choice.

 

I had a 3 foot hood mount antenna on my old pickup. I mounted it on the driver side because the am/fm antenna was on the passenger side. You can buy a left side or right side mount for your needs. The reason for the shorter antenna was so when I pulled into my garage, it didn’t damage the garage door.

As others have mentioned, the middle of the rooftop is best, but sometimes that’s not always an option. I didn’t have to drill any holes either with the fender mount. You will notice the signals will be a little directional using a side mount.

If you aren’t worried about hitting objects that you drive under, always go with a longer antenna, 4 feet or longer. As far as magnet antennas for the roof, people seem to either like them, or hate them. With my newer pickup, I’m using an nmo mount about a foot
behind the cab on the drivers side, using 2 sheet metal screws to hold the antenna mount to the inside of the pickup box. You don’t want the antenna too close to the metal cab. I was able to match the antenna to the radio (as far as SWR goes) just fine. This setup works fine for my needs. Hope this helps you.

 

Right rear corner post of the bed. As far from the passenger compartment as possible, will make it strongest off the left front of the truck.