Antenna Recomendation

I have a Uniden Pro538w that I bought in the mid nineties to use in my pickup. I just had a cheap magnetic base antenna that worked ok for my cross country trips.

Now I'd like to put that cb in my pete 379 boom truck. I'm not looking for super long range. Just need to be able to talk to the folks in the yard house at the lumber company and nearby trucks.

I found the manual and it says it's pushing out 4 watts.

 

Does it matter between the 5" and the 10" shaft? (Setting myself up on that one)

Thanks

 

I was looking at the firestiks too. Seems hard to beat for around $20. I don't want to be cheap about it but also don't want to buy a lot more antenna than I really need.

 

Thanks guys. I'll see what I can find locally tomorrow. I was in the Pete dealer today but I'm sure they are overpriced.

 

One more question:

I was assuming that one antenna mounted on my mirror bracket would be fine but should I be worried about the boom sitting over the middle of the cab? Would it be better to have an antenna on either side, assuming I can get them 8' apart?