I drip (velocity at 50w) for near instant pain relief and or tank it (nautilus) as a top up after the initial dripper rush. The thing with dripping is you can get caned too quickly, that's ok if you've nothing to do except stare into space, sometimes a few toots is preferable.
When you say you rinse with iso do you mean soak, how much iso to 50g of hemp, is there any mashing involved? The cbd leeches into the iso and you're left with a concentrate?
My apologies for all the questions, been googling this subject for ages, the various extraction methods I've read about seem complex and some expensive.