Originally Posted by mikel
Jackster...any chance going up a wt in that line would help him feel the rod load? It might slow the BVK down a little and feel more familiar to grassonfly..?? -Mike
It will but it is not that simple.
There is a misconception that adding line weight changes the rod action, e.g., makes a fast action rod into a mid action rod. Action is the flex pattern of the rod. It is how the fly rod responds to a load. Whether the rod is casting a 9 wt line 50 feet or a 10 wt line 35 feet, it is still a fast action fly rod.
What an added load, whether by a higher line weight or a longer cast does is to change the timing of the cast. So whether adding line weight will help the cast is whether his timing is too slow OR whether the his casting motion does not compensate correctly for the flex pattern of the rod.
As a rod flexes the rod tip comes closer to the rod hand and the effective rod length shortens. The casting stroke must compensate for this shortening of the effective rod length. A faster rod shortens less and requires less compensation. Using the same casting motion for a slow rod with a fast rod generally opens the loop.
So I think the problem is one of both timing and casting stroke. Plus he is going up from a 6 wt to a 9 weight and that will tend to slow down the casting motion because of the change in the fly rod's swing weight. I think he is both under powering the fly rod and the stroke path is off.
Going to a higher line wt. will add load and improve the timing. But this will also increases the casting effort. If there is a problem with an underpowered cast, it may worsen this problem.
There is no free lunch.