Thanks for the input guys...I think i am now leaning towards chroming the fenders....i like the look and don't want to worry about their durability.
A viable option for protecting powder-coated, painted or chromed fenders is 3M's "Clear Bra" ( insert shameless humor here ______)
I'd guess-ti-mate that $10.00-$25.00 +/- from the local installer would get you enough for the fronts of two TD fenders (or other leading surfaces of your trailer). It can, as well, be mail-ordered and installed by you after receipt.
(As stated in the above link, this is effective against small stones & sand - it will not prevent (as Rhino lining may) dents caused by large stones, rocks and large debris)
It is not the years in your life that matter, it's the life in your years.