Non Water Alu Heads?

Yes, I guess question is a bit silly. I fully understand you don´t drive around in the pits and keep the engine running while waiting for your turn to do the burn out, but are heads super sensitive. I mean you need to keep shutting engine off unless you don´t need to move, or heads instantly get to hot?
Just a little general speaking from someone who have run these type solid alu heads...
I'm sure there are some drag racing experts on this site. But most of the heat builds up as you're staging and doing burnouts....by that time the engine is already warmed up. Then you go full throttle for a 1/4 mile and it gets intense!! Even the hardest drag racers have at least an electric water pump to keep from ruining the engine. I'll step aside and let the people with experience speak!! treblig