I tuned in to Yaakov Hoter's "Highway to Beautiful Improvisations" webinar yesterday and came away with a few insights, two of which seem pretty valuable.
Here are those two things-
1) When practicing new arpeggios/scales/patterns etc. DO NOT USE A METRONOME until you have the pattern down with the proper picking technique. Be absolutely certain your rest stroke picking is spot on before using a metronome at even 60 bpm (his suggested starting tempo).
2) Much like the right hand knuckles with La Pompe, the outside corner nail on your index finger should pick up black residue from brushing the string before the pick hits on the dowstroke when rest stroke picking. Yaakov talked about jamming with Stochelo at some point in his studies and after 30 minutes asking to see Stochelo's index fingernail. Sure enough, they both had a black triangle on the outer corner from brushing the strings. This led Yaakov to affirm his technique was close to one of the masters and therefore correct.
There was some good practice routine advice and a fair amount of pitching his latest lesson for sale. Overall, worth the hour of time to pick up a couple good tips.