Magnetic signs are great and would work in this case.
But if you dont mind having it on there all the time i would do the 2 side back windows and something on the rear as well.
5 reasons why i would pick this over magnetics.
#1- Damage to paint if magnets are left on to long or not cared for properly is a REAL issue. (i can post a pic of what can happen)
#2- Magnetic signs can fly off, happens every day.
#3- some people (kids mostly) like to take magnetic signs, usualy just for the "fun" of it.
#4- You have to remmember to put them on...or they are not doing anything.
#5- Most consumers view magnetic signs as a company that can come & go just by a quick grab of the signs off the truck. I have read studys that also show customers feel more safe when they see the name/logo/phone on the truck and its vinyl/printed/painted on. Shows the company is going to be around, and not just the "fly by night" type.
If you need some magnetic signs send me an email (firstname.lastname@example.org
) with what you would want and i will send you a quote, i will also quote the windows if you would like.