Battery disconnect switch

I did not want to hi-jack this
http://www.forabodiesonly.com/mopar/showthread.php?t=139089
so I figured I would start my own thread. My car, when the day gets here that I put it together will have a substantial amount of electronics in it. Between the efi, trans controller, rpm window switches etc it will have a lot of somewhat "sensitive" stuff in it. In all the reading I have been doing one thing that I have seen mentioned several times is that when the disconnect switch is used a voltage spike occurs, often times taking out something with it. One thing I have read is some folks deal with this by running the charging system trigger wire thru a on/off switch, say a toggle of sorts. When at the track, this switch is left "off" so that the alt. is not energized. Any thoughts/comments/insults or just snide remarks would be appreciated.....:burnout: