Suspension Enhancements for Single Axle Trailer

I put shock on mine and it really smooth it out, but i'm tandem. it should work for you also. lowering is not so easy if you don't have tire clearance in the fender well. for the cost and return of an axle change your not going to gain much, your spending a 1000.00 to save 800.00.i would try the inexpensive things first, and maybe a cab high canopy to try and get the wind up over the trailer. also you may have to adjust your driving habits for better mileage.
Jay D.