As Phrygian is a relative mode of both Ionian (major) and natural minor (Aeolian), the fretboard patterns you use for Phrygian are the same as for those modes. In other words, Phrygian offers no advantage in that respect. If I recall, you like to play in the "key of E" and if you also favor Phrygian, that would mean E Phrygian, which in scale pattern is identical to C major and A natural minor.
Because such patterns are movable, the same patterns are essentially used in every key in major, minor, Dorian, Phrygian, Lydian, Mixolydian and (should you ever have a need) Locrian modes. The patterns just shift and cycle on the neck.