Ideas for what everyone is using for traction devices?

Sandbags in the trunk, lottsa sandbags with sand in them. About 400 pounds. As far back as you can put them. But...... try not to brake too hard. And crashing is just flat, not allowed.
Ok just kidding of course.
I just put a bigger cam in her. I had to make up for the slow 60fts somehow,lol.
Ok seriously now,IDK;
But if it's a streeter, stick it in second,lol. I mean delay the secondaries, or retard the timing, or install a smaller carb,or
Ok what I mean is I'm in the same predicament, and there has been no good cure for me.And I mostly don't care, because;sliding and drifting and spinning is just so much fun, I'm willing to sacrifice the half second on the start-line.
Happy HotRodding