I've always been a firm believer that you need to use good 'ol elbow grease and wax to get optimal protection for your vehicles surface. I first though that Paste Wax was the best, but I have been using liquid wax's lately and getting the same results. Liquids are also much easier to use.
I read a few reviews on that F11 and they seem to be mixed. It also looks like a detail spray. Shine and durability (with detail sprays) last as long as the ride around the block.
Take a look at some of these reviews on Amazon:
https://www.amazon.com/dp/B076R7FKYP/?tag=gmtnation-20
I will never trust a shop to detail my vehicles, only because I am very meticulous and like to know that no spots or methods were skipped.
When using a claybar, I get a spray bottle and fill it with tap water and a few drops of dishwashing liquid, spray it liberally onto the surface, then start claying. That works the best and is very inexpensive.
A full exterior detail to me:
Wash
Clay / Rinse
Paint Sealant
Wax
Beer ...for me
Tech Shine between waxes.