Fib and EW are related kin. In the beginning of a strong uptrend wave 2 often pulls back to 38%. After making the 5th wave the market often bounces off of the 100%, 127.2%, and when real strong 161.8% price projection/ext. I use both just for overall market structure. I don't try and count subwave, etc. If you believe that markets are cyclical then EW/fib makes sense. If you are like R Canfield then don't bother.
P.S. some know this already, that look for a confirmed reversal before attempting use EW and define a new trend. For example, a trader vic 2b, a double bottom or top, a wyckoff spring, a key bar up, etc. Lastly you want to see a pullback on lighter volume to 38% which is going to be wave 2.