Man you lucky grower being able to grow outdoors and yes top top top shade dont mean nuthink when they are outdoors as the suns moves and you will notice the sides, the top, the side in fact the whole plant gets rays throughout the suns movement.
Anyway its the fan leaves that take in the sun for photosynthesis so if you want monster yeilds id top bend top the whole lot.
Watching with much interest for you beating my 10.5oz from 1 x plant indoors btw.
Your light has a few more lumens than my 2 x 600w hps's.
Lol
T4