I came to the same conclusion Logan, but appreciate your validation.

As usual, a job I thought I could knock out in three or four hours turned into an eight hour marathon. I wound up going with the single thru-hull myself, but did run another ribbon of foil up to the lifeline stanchions/pulpit/pushpit just for the hell of it. Since these items are totally isolated from any electrical potential or other deck hardware, I felt it might be of some advantage (I did make it a quick disconnect in case I see no benefit from it later when the boat is in the water.)

One thing that caused the inordinately long job time - just as I was finishing up the install, replete with every inch of copper foil edge taped to the hull with aluminum contact tape, and was tightening down the wing nut connecting the foil ends to the tuner. I discovered that I had inadvertently been loosening the lug itself within the tuner box (yes, tightening the wing-nut with pliers can cause this) #%$@&^*%$ idiot. This of course necessitated pulling loose some of my ultra neat installation, hanging up-side-down in the locker to remove said tuner, dismantling the cover, and re-tightening the interior ground lug. All this in a frigid 15 knot breeze in the open cockpit, where the tiny little nuts and screws kept falling into the bilge. I somehow felt that it was more time-efficient to keep jumping down into the bilge to retrieve them, than say, putting a towel under the unit to catch them - *(&^%$#@&^ idiot.