I think this is a great test. The problem with it is as follows:

This test only shows the line stretching at it’s maximum lb rating. Monofilament line happens to stretch easily with only light pressure. Fluorocarbon stretches under much higher pressure. This 8lb of stretch won’t be seen while freshwater bass fishing very often.

I would be interested in seeing the stretch at different weights of pressure. Obviously we don’t have to go into the reasons, times, and places each of these lines are conducive. My only issue with fluorocarbon is the price. This is why I’ve been mixing in some hybrid lines or co polymer. I’ve noticed the diameter is higher though and that’s uncomfortable when casting and hearing your line slap the rod a little. So I downsize when using the hybrid lines.

Thanks for this test. I think it’s a great idea, I just think it would be a whole lot more accurate if we could see the amount of stretch per line type at different weights building up to the max of 8lb.

Thanks
Jr