Welcome to the forum. I have a Dyna, and put footboards on it. I did not like them for two reasons, they were not angled correctly and put my feet at an uncomfortable angle (just a little), they were not "dampened" (vibration isolated like factory footboards), and my feet moved around. I much prefer my highway pegs.
I was mainly looking at the footboards for the heel-toe shifter so I could teach the wife how to ride. She's got a below-knee prosthetic and can't really maneuver the mid shift. But we aren't going to let something like a prosthetic get in the way of riding.
Welcome from another cajun in southwest Louisiana!
AhHaa; More, better information on your reason. I'll think on this, and see if I can remember something worthwhile to pass on to you.