one slap on the throttle with a dry slick will be a lot rougher on the drivetrain than doing a burnout after initially getting the slicks wet.

Also, if the track temp is high, you will want to make sure that your slick is up to operating temperature so it will work properly, as with the track that hot it'll be greasy. With a hot track you're adjusting your power coming out of the hole, suspension, etc. If the track is hot, the prep of it will have less affect than what you do to adjust for a greasy track...

IMHO I would only dry hop if you're using a radial tire (not Drag Radial) as proceeding to do a burnout with them will only make them greasy...

Just my .02