Agreed.
I've used WetCoat and the difference between hosepipe and jet wash application is night and day. Applying it dry is mind boggling IMO and wet application works much better with a strong jet wash - if you're going to hosepipe it off, you're better of not buying the product.
Though for the price point I will go Meguiar's next time. Wet Coat is a PITA, apply too much and you always end up with water marks, apply too little and you'll question value for money.