have had rock tamers and tow tector... kinda meh on both...
there are poly shields i see in canada on trailers all the time, but i can't find anything on google about them, not even a pic...
they were on lund or ranger i believe, and were kinda half ass molded like a boat front (i think to be generic) that mounted to the frame of the trailer... ugly, but i'm sure very effective... best i've seen...
if interested, maybe try to google boat dealers in canada, or look at high end used boats for sale...
good luck...
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found one, but no info on it... i've seen them bigger than this also...