I surf every day. Should I train?

Cross training is becoming the norm with elite surfers.  Taj, the Hobgoods, and Fanning are all known to travel with their trainers.  Because surfing requires a vast array of skills including but not limited to speed, strength, power, quick reaction time, etc.; it is important to selectively work on these areas outside of the water.  I look at it like sharpening weapons.  Cross training will allow you to specifically sharpen certain weapons but how to use those weapons is learned only in the water.  Definitely cross train, but DO NOT let it replace your water time!!!