Sorry for this but ive been workin on the double thumbin technique and i honestly think i have cracked it tho i think what i am doin (along with all my techniques) is wrong but it sounds right
i place my thumb and index fingers together to create a sorta pick strum down with my thumb bottom up with my thumb nail and up with the index finger I get this triplet effect and have now finally made Power by Marcus Miller sound right..dun half hurt ur thumb...do ppl use the nail or the fleshy bit next to the thumb.. im using the fleshy bit..can see a calus formin there

... i still think classic thumb is out oy my league are there any more simple-ish double thumbing songs like power that i could try..?? thanks bunch ppl..