YES!!! Get air dryers for the bays!!! You are missing an essential piece of the logic behind adding an air dryer;
low cost to operate. This gives you more profit at your wash. No
soap, water, sewer! Yes, more to purchase, maintain and fix, but mine have been really low-maintenance and I have had them a year +. I bought mine used, so very affordable. Who cares if they spend more time!? Time + $$$. My SS is only 2 bays ( plus IBA) and I love it when customers use blowers because it is like the vacuum; highest profit margin item / selection at the car wash!
I want to be the car wash that has the most goodies in the bays. I keep adding more selections. I have a mat brusher. I keep adding more and more
vending; I just relocated 2 under-performing vendors from a small laundro mat to my car wash. The more quarters plinking into the machines the better, right?!