Have you ever used a "decontamination system" such as IronX, or one of its ilk, on your vehicles? After the vehicle washing/drying is done...I'd do that decon-process next.
Then:
-Claying is determined by "The Baggie Test".
-If claying would be performed, I advise the use of a swirl-finder light source: Auto clays do contain abrasives; paint-marring may have occurred.
-Depending on the swirl-finder results...a polishing process may be needed. Least aggressive method first.
-Once the polishing, if needed, has met your expectations: Apply your choice of an LSP.
Thereafter, and since it sounds like you do not inflict much, if any, paint-marring:
-I'd use a fine/ultrafine polish at least once a year...(maybe twice: Spring & Fall)...to heighten the clarity of the paint.
-Follow that with an application of your choice of LSP.
I see no problems by using a Quik (sic?) Detail Spray/Detail Spray Wax after each car wash session. They should have the properties to assist in maintaining the LSP'd paint finish between the annual/biannual light polishing sessions.
Hope this makes sense; and helps in some way or another.
Bob