I have the adjustable passenger floorboard mounts on my SERG. When putting them together, I discovered that the floorboards will mount on either bracket. I originally had them on the bike so that the adjustable arm went toward the back, but this put the floorboard too far back when it was in the down position. Down position is necessary for my BSR because she is 5' 7".
Since I have the Rumble passenger floorboard inserts, the patter on the floorboard needs to match the rider floorboard, so I couldn't just switch the whole assembly from one side to the other.
So, I took the entire floorboard assembly off both sides, disassembled and reassembled so that the adjustment arm now pointed forward. Much better for my BSR. The whole process took about 30 minutes with the assembly instructions ("I-sheet") close at hand. If you don't have the I-sheet, your dealer can print it out for you or you can get it from the H-D website in the P&A section.
Of course, what I have done is the exact opposite of what most of you hear are talking about...