If you get the remote mounted switch you can actuate it with a handle hanging under the bumper. It has to be marked "Push off".
Now, if your local tech is nothing to worry about then maybe they won't care that you have the battery in the truck and no shut off. We have one track even makes you prove it will shut the car off(it has to). More technicalities that come with mounting the battery in the trunk.
2006/2009 UMTR Points Champion