Thanks Steve,
I'm going to be all over your rig's "big reveal" at Hutch . Got to see all the new toys and ideas from Marsha, Jack and David!! Also read you "Spend My Money" thread from last November, last night!!! Trying to pursue many of the same ideas in a 5th wheel. Currently in discussions with NH, but Cole in gun-shy on "new" stuff (e.g. LiFePo4, mini-splits, etc.). Have started looking a SC. We will not finalize the decision (RV, HDT) until November. Getting lots of input ideas from a lots of experienced people.
Back to the HAM Shank - 8' x 8'!! Will be curious of the bonding to the roof and see how well if works. I believe you also have a whole pile of solar up there? I little jigsaw puzzle? I could argue that the Hi-Q screwdriver is a better antenna (may start a religious war here), but I do like the Tarhill tilt-up mount. Have an acquaintance that has used a Hi-Q 6-160 on his commercial big rig for 4+ years and loves it. Hopefully you will get a chance to use it before or at Hutch (and with the blessing of the solar cycle).
Sounds like you have lots of antenna options thought through. I will look to see what ideas I can "appropriate". You might also consider a grounding stud on the hitch (frame attached) as another option. Will have to experiment with grounding, but maybe others here have experience with grounding their rig frame apart from the pedestal or while boondocking.
I will also be looking to see what I can put on the truck - maybe on the drom box (lower, smaller one) that will stay below the other truck "obstacle feeler" antennas. Also have some off-road 2M/70 cm antennas that can take abuse (to a degree). They don't do well with garage doors - as Jack would say "Ask me how I know?"
Gerry
73s AB0GF