There seem to be so many different opinions as to how much aileron to apply during a crosswind take off on the B737! I go for more rather than less so tend to agree with Rainboe.
But when it comes to a potential tailstrike no mention ever seems to be made of rotation rate. I believe that Boeing recommend 2 to 3 degrees per second. If we take the average of 2.5 degrees per second this means it should take 6 seconds to reach 15 degrees. Quite often I see quite rates of rotation which appear to exceed the Boeing recommendation by a fair amount.
One tip I got was the 10/10 rule - don't exceed 10 degrees pitch up below 10 ft radio height - easy to remember and might keep you out of trouble.
Fly Safe in 2009!