There was a recent post here on modes and probably many others as well. Kirk and Slejhamer hit he nail right on the head in these posts. When playing you do not have time to concsiously think about modes.
Any study that you do when practicing whether you use the method from
Plane Talk, study scales, listen to music, etc. is just a way to internalize the vocabulary of music so that you have it available for use when it's time to play.
There are many great players that have limited or no knowledge of music theory from a thinking perspective, but they know music theory in an intuitive way. They have just learned the language of music the same way we learn to speak English, through hearing and imitation.
If you are interested in practicing scales just learn the major scale really well. Everthing you need is contained in the major scale or can be arrived at with a small change to the scale.
I am pretty sure that like all of us you play the guitar because you enjoy it. Find ways to make the music you want to play and the rest will take care of itself over time.
Best Wishes,
Bob