Super ridiculous barrier skip theory

Start a hover far away from the barrier.
Get close to the barrier high up in air.
Pull a bomb. Use leaf to drop bomb.
Pull second bomb. Use leaf with precise timing to have bomb fall in front of you.
Pull wind waker in air.
Have first bomb detonate, take FORWARD damage from it land inside knockback zone.
Climb up, pull wind waker same frame as damage invulnerability ends, dive off of 2nd bomb.
Dive under barrier.
Cancel wind waker, hover up into GT.