My wife struggles to tie knots due to an injury in her hand. We bought fastfenders from the Minneapolis Boat show. This is probably the best fender hanger investment we did. She can preset the fender length and it takes less than a second to put fenders in place. Very happy with the quality of the product. You can check out Youtube videos on fastfenders. There are quite a few of those. Some of the websites where you can check videos and see if it will help your fender hanging issues.