My guitar teacher taught me to use a method where you stay in the same region of the neck. So if you start the I with first position in A, then for the IV use the position for D that's right in the same area (the 4th position). Then for the E scale in the V you use the nearest pattern of E (the third pattern.)
You can also start in the 3rd position for the root scale in I and the scale boxes that are in the same area. Same for starting in the 5th position for the root scale in I.
And, he said you can play the I with the first position, the for IV go up the neck to the first position for that scale (D, if your root is A), and up two more frets, 1st position for the V chord (E, in this case).
What I like is that more than 5 notes will be played with the 3 scales. I'm not sure how many, but more than 5. More notes = more sounds, more variety.
I played the fender and gibson today. i was favoring the fender lately, but today both felt pretty comfortable. i prefer the 9 gauge strings of the fender, but the gibson's 10 gauge felt fine.
also lately i haven't been using a pick, because of some thumb pain in the right hand. but now i'm holding the pick differently, trying to use my hand in a way to distribute the force more evenly so the thumb doesn't take so much. seems to reduce the twinge of pain. still gotta work on it.