JG wrote:
I don't think 4:1 is enough for decent scope... minimally 5 and up to 7 is
more typical. 4 is ok for lunch, even 3, but if it's overnight, longer is
better. Since there's rarely room for 10, I've never done it.

I agree - I normally go to at least 5:1 (at max tide, of course). But
I always let out extra after setting - at the very least, the point of
the rode that was on deck will be at the water's surface after I
construct the bridle.

IIRC, Hinz points out that beyond 5:1 the geometry isn't improved,
though you have some added protection in a surge.

My point is that if I can't set at 4:1, I don't bother letting out
more, because there is likely something wrong with the location, or
the anchor is fouled. I'd rather just pull it up and try again.
Since I'm usually in tight quarters, if I couldn't set I'm probably
already a few boat lengths away from where I wanted to be. Perhaps
I'm just spoiled with the Delta, which usually grabs within a few feet.