FWIW I think I'm back to "square one" on this whole bonding issue. :S I read through the entire 41 pages of that 2008 / 2009 discussion on bonding and when none of the "experts" could agree I decided to just leave it as is for now as it seems to work just fine even with my Surge Guard in the circuit. The inverter's output I left un-bonded, simply wiring it's output to feed the trailer's main service cable, which also seems to work just fine with the SG in the circuit. The subject of using a GFCI on a genset output also came up in that discussion but again no one seemed to agree so for now I have bothered with that either. Maybe BFL13 was right when he said back on Page 1 of this discussion "Ignore the non-problem!" :p