Do people tend to go with the 46" or the 50" INNO bars? the 46" in photos I have seen seem to almost be too short with very little "wiggle room" for movement left to right. Would the 50" ones stick out too far off the edges? I am leaning towards the 50" ones so I have a little extra area for strap tie-offs for my kayaks, etc...but I wanted to see what others were generally getting with their INNO racks