Don't worry abut the front, the rear of fairing is the key to aerodynamics.I'm thinking about making a project of covering them with fabric and making a removable front and rear fairing equivalent. Removable only to avoid the concerns the FAA may have with welded brackets. I've heard that some of the modern coverings designed for flight surfaces can be heated to drum tightness and come in colors so you don't even need to paint...sounds like a fun project. Perhaps some Adel clamps holding lightweight wood with an aluminum front and rear element followed by glued fabric? Not sure how it would handle the rocks and sticks.
John