A mag mount antenna, couldn't be hard to rig something up. People figure out ways to put mobile antennas on bicycles so a moto should be easier having steel and internal combustion.
'91 Pickup - Imelda
'08 Tacoma TRD
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"To live is to suffer, to survive is to find some meaning in the suffering." -- Friedrich Nietzsche