I think high pressure bays, low pressure bays, mudder bays, etc are all good ideas.
But I choose to not do any of them.
My reasoning is that it is probably good PR &
marketing, but would probably have a negative impact on maximizing capacity utilization over time, which translates directly to profitability.
I think if my utilization was spread out evenly over time, and I had plenty of capacity for busy days, then it might work really well. But I dont. I know that the majority of my profits come on busy days, and I would not want to have bay(s) "set aside" for a minority of customers. Many come to my wash for the pressure+
soap, they would definitely avoid a low pressure bay.
I say minority because I used to think that some elderly customers did not know you could pull the trigger for high pressure - so I talk to them, and they generally say no, I know that, I can handle the lower pressure better.
So the low pressure bay is arguably solving a non existent problem, all of my bays already have that option.
NB, these specific thoughts are
specifically based on my wash, my demographics, etc. This is definitely a case of ymmv.