Sidney, I’ve never used boogie-woogie but if you wanted to create a left hand bass line in that style, my teacher showed me: form, for example, CEGA on some low strings with fingers 4321. Holding down finger 3,without plucking, pluck only CGAG CGAG with a “swing beat”. This can be moved around to FCDC FCDC and so on. That anchored 3rd finger helps with speed. Use an appropriate melody in the right hand.