I believe i have, and have read, all of the Missing 411 volumes. I would guess less than 10% are sasquatch-related assuming sasquatch is F&B, non-ET, not some kind of "spook", spirit, demon, interdimensional (I don't believe in "dimensions" in the way this explanation uses the term) being, etc. You can write off all of the cases from "Missing 411: The Sobering Truth" as sasquatch .. 0%. Others involving ship or plane disappearances ... same thing.
Absolutely agree with Norseman about the Dennis Martin case. All evidence points to sasquatch. Other cases where kids were recovered unharmed and described hiding in boulder fields from black monkeys, etc that were hunting them, "wolf" or "bear" packing a child off under its arm rather than in its mouth, etc .. suggest sasquatch to me.
But the bulk of the cases ... including "The Sobering Truth" ... do not look like natural causes nor do they seem to be possible results of anything F&B.
Having had some of my electronic equipment go haywire all at once, devices not connected to each other, out in the woods a time or two, though I don't "like" the idea there might be some kind of high-tech component to some of the disappearances, I'm not willing to dismiss it because that is where the evidence points and my own experience at least appears to substantiate. ***be careful out there***, don't just watch out for the obvious slick logs, drop offs, stump holes, drowning / hypothermia risks, bears, cougar, or even F&B bigfoot, keep an eye open for things that don't fit, things that are out of place. 'til we know what is, we do not know what is not. It may sound paranoid, but you do not get 2 screw-ups if the first one kills you.
MIB