NP are not hard to fillet or de-bone but it does take practice.  I can find little difference between walleye and pike in northern climates; taste and texture wise.  Both are white, firm and flakey and taste identical IMO.  I have seen many instructions and videos on filleting pike but none are much use.  You have to see someone do it and then do it yourself a few times.  Once you have it down the mystery is gone.