Trying to get your point across??? I would leave your GSA on the mainland, bring the HD. There is really no offroad GSA riding available on Oahu, probably more on Maui and the Big Island. The ferry to Hawaii has been delayed at least a year, so unless you freight it over there on Young Bros, a rental is the only option. If you leave the GSA on the mainland you will be able to hop on a MAC flight and have a bike waiting for you. I bought my GSA strictly for when I return to the mainland... although I am having fun on the few twisties we have here.
We are enmeshed in the cancerous discipline of "security." And in the worship of security we fling our lives beneath the wheels of routine - and before we know it our lives are gone.