I got on ebay and ordered a couple keyed battery cut off switches. They aren't the one I want.. Waned the one which mounts on the fender, keyed. From the outside you see a pretty little chrome circle, and you just turn the key. Weatherproof, and no lifting the trunk.

Also, I have been taking the steering wheel into work with me. A bit of a hassle, there are nine screws to deal with to do it. So, I ordered a quick release kit from Summit.
It is supposed to allow use of the stock horn, and all that is supposed to be removed for installation is the steering wheel. I'll be the judge of that. I totally expect it to be a little harder. Looks like it functions by depressing a spring loaded disc behind the wheel, and then you simply pull the wheel off. nice.

The adapter kit, $17 The quick release $122 the new wheel $82.

The look on the crooks face when he hops in to steal it... priceless.