The idea that longer rods are more tiring interests me, because I have consistently been going to longer and lighter rods for my fishing. I agree a 15 or 16' 10/11 wt. is very tiring compared to a 13' 8 wt. However is a 15' 7/8 wt more tiring than a 14' 9 wt? It seems to me that how tiring a rod would be to cast depends on the weight of the line you lift more than the length of the rod. In any event being able to make long casts while wading deep is an advantage where I fish, the longer rods seem to make it easier to cast long distances under those conditions. I am currently using a 15' 7/8 Loomis for my fishing and eagerly wait arrival of my Meiser HighLander 15' 7/8/9.