3 notes per string scales can be viewed on the fret board as group of 6 notes on 2 strings (3 times and you have touch all the strings)
What if you play on each group of 6 notes the 1st, 5th and 6th
What if you sweep the 1st and 5th
What if you combined this in a kind of lick ?
Below my homework for tonight base on A minor (GP file available here)
(nota : on section 2 I cheat on the second arpegio, but it sounds better like this :)