>If the toggles aren't in good enough shape to pick up the boat, they aren't very reliable as a safety device for a swimmer.
You might have missed the point that I was referring to a LOADED boat. That's 80+ pounds of gear or so. In my mind, the toggles at the end of the boat, and the whole structure of the boat itself, are not designed for that kind of weight distribution/stress out of the water. It's not just the toggle area. Imagine supporting the kayak just at the pointy ends. Then loading up the middle with gear. In my mind, that's a lot of stress on a structure that expects that weight to be supported by water.
I understand that the 150+ weight "in the middle of the boat" is me - and I'm out of the boat. But I don't want to be concerned about weight distributions and interior structural stresses. I did pull a U bolt out of the bow of a loaded boat when trying to pull it across a sand bar. Admittedly, it wasn't that strong (Dagger Vesper). But it made me sensitive to loaded boat treatment.
As far as "spearing" - that must be a different "carry" than I've seen used. In my experience, with four people, one strap is placed about a third of the way in from the stern and the other a third of the way in from the bow. At each strap, two of the people stand on opposite sides of the boat (nowhere near the pointy ends). All four pick up at once and try to march together. So you have four people, two on each side of the boat about a third of the way from the bow and stern. The straps are a loop of webbing with the loop placed under the boat and coming up both sides so to be used as a shoulder carry rather than just a hand grip.
In addition to tide flats, I recall a situation where the group wanted to leave pretty much together. The boats were all loaded on dry ground (can't remember if tide was coming in or out) and only after all the boats were ready to go, they were all carried to the water so we launched not exactly exactly, but pretty much all at the same time.
With toggles, I always tell anyone who is going to help carry the boat that they carry the bow or stern in their arm and the other hand holds the toggle for safety. People don't always listen. One "helper" wasn't expecting the hull to be so slippery and when we started walking, I pulled the boat right out of his arm (he wasn't holding the toggle). Fortunately is was an empty boat and a 4 ft drop to soft grass. But ... lesson learned.