Nah FDA, he is correct. Air Accelerate 100 has always worked best for surfing from TFC to CS 1.6 to CS Source to FF. The problem is incorporating it into a real map where you your movement is affected by the 100 air accelerate when you are not surfing. It just doesn't work well.
Surf maps cannot be completed in 99% of cases if set to air accelerate 10 and I dare you to try if you don't believe me. I spent a few years perfecting surf maps aalthough there no decent examples of surf maps on FF that can be tested. But, if you are interested FDA, I can probably show you the ropes as you sound like a total noob when you say air accelerate 10 is a viable option for surfing.