Lockout is truly your best option... I do believe the VCT upgrade released in 2012 makes a big difference by ensuring the phasers receive the correct oil pressure, however as Ford was new at this game and basically upgraded the triton's top end with a 3v vvt setup, there was a lot of learnings from this venture.
The 2v was incredibly reliable... so if you just lock out the phasers you at least get the benefit of another exhaust valve and the 6t80 which is quite a reliable trans