And from an isolated, undisclosed location.
BTW, those objects nailed to the piling are decorated palm frond bases. Seems to be a thing now. These were also all over some old pier pilings on the way there. Not my thing, but it does liven it up a bit.
The concept, the bike, my legs & lungs: all worked great. I was able to average 8 mph over a 15 mile out-and-back route. The pace was deliberately moderate today because I had no idea how little or much energy it would take, and I didn't want to run out on the way back. I needn't have worried. Could push it and maybe averaged 10 mph. A lot will depend on the tide, and whether the hard-pack down by the water is covered. If I have to ride up in the soft part above the average tideline, this could drop to 5 mph.
One more thing: Yes, it was probably wise to go with these fatter 4.8" tires vs. the narrower(!) 3.8's on the more-affordable Wednesday. Down on the hard-pack it probably wouldn't have made any difference, but when traversing the loose stuff I was wanting all the tire I've got (and maybe a tad more a couple of times).
Anyway, success! I'm looking forward to the coming cooler weather, but today's 85º was entirely tolerable.