Mark,
I don’t know if with heavy load it capsizes in the dressed knot you show (the state D1 as called by bipoqid), but try this, tighten the bend as yChan does (ABoK#1062) but using the tails/WEnds (as SParts), then load the real SParts (the action should be as you load the SParts of ABoK#1062 by pulling in opposite directions), you should obtain a maybe-stable D2 (bipoqid) state.
To my (Italian) ears " Voldemort" sounds strange because in Italian “mort(e)” means death!
I like “underlying structure”.
Ciao,
s.