Keep it simple.
Go with the:
But this is triathlon so it’s supposed to be complicated, so pay no attention!! 
Steve - THANK YOU for this tip - the Aero Hammock freakin’ rocks!!! Bottle is solid as can be in there (bump-tested hard on last night’s ride!), and so much easier to get out & pop back in than a stem-mounted cage (ala King Cage - BTDT-works OK, but reach is awkward) cage or some sorta ghetto zip-tied between-the-bars cage (BTDT, but never could get that to fit well on my skinny Vukas)…
I love this thing - simple, CHEAP, and 100% effective.
Cheers, Chris