I really don't like the standard fenders that come with the HF trailers.
I've had a HF trailer that I've used for years and the fenders have never been that great and have given me problems.
So... if you have actually used one of the replacement rounded fenders, I'd love to hear about it; especially if you have information about exactly what you used instead AND how you mounted it !
I'd like to move away from the HF standard mount and mount these in another fashion that is more resistant to vibration.