Yes...I did the same thing and glued some high high density foam into the footwells. Stroke improved out of sight after that. Didnt realize that not being able to push off the front foot effectively made such a difference.
It has occured to me and I have been told that some people would say adding foam to a footwell may present a safety issue, coz your foot may not as easily slip out if you were pushed/fell off in rough water. Might be like a horseback rider coming off with their foot stuck in the stirrup.
