In a 12 bar major blues progression in lets say A, where i can start my solo in either a major or minor pentatonic, can I use BOTH the minor and major D pentatonic on the IV chord? When I get to the IV chord, can I treat it like an I chord for that period of time? Ive seen a couple of guys who move to the 5th box of the IV chord to solo over it but how reliable is this technique?
Im asking because I noticed that 90% of my licks are for the I chord and when I get to the Iv and v chords my flow is broken.
Hope you understood my question
If you are at the IV chord and play the notes from the correspondig scale (like D in your post), they are "right".
However, it may sound as if you're changing the key. Instead of this, keep using the original scale and build the licks around the root note of the chord you're currently playing over. That's the reason you'll find things like "licks for the IV" or "licks for the V" in some tutorials.
It's wonderfully satisfying to the ears to hit them at just the right moment!!
I actually managed to understand some of the theory in that video!!!