at the top of Leviathan (
http://www.ukclimbing.com/logbook/c.php?i=26062) at The Dewerstone
near plymouth there is a tree with currently two loops of ab tat (quite new).
Both these loops were tied with double fig 8 (on bight), one with 1 inch tails.
This lookeed decidedly dodgy to me and given the issues with joining ab ropes (which
have a simlar geometrty in terms of pull direction and ability to roll) made me very uncomfy.
I retied both with double fishermans, same as i'd always tie this sort of permenant loop with.
Scary