I would be hesitant to run double anchors on a layout. they are meant to run into a sea and not side too. I know of one layout that swamped and rolled with a guy inside when anchored bow and stern.
this is how I anchor my layout, it makes changing people out safe and stops all the jockying around with the tender trying to come along side safely.
I use a big anchor and 8 ft of chain. to make sure the anchor can take both the layout and tender on the same line. put a float or large decoy on the line then after the float make a loop in the line, this loop is to tie off the tender
then measure your line the same length as your tender, then add 10 ft and put a clasp to attach your layout.
when it is time to change out hunters, the tender goes up wind of the layout and grabs the float and attach it to the bow of the tender. let both boats settle on the single anchor
then simply pull the layout up alongside the tender and change out your hunters. when finished let the layout resettle behind the tender and unclip the tender from the
line. this makes for an easy safe procedure for changing out hunters especially if it is rough and howling. here is a rough sketch of the details]
hope it helps
Uploaded with
ImageShack.us