I have mastered the Halves System, my counting speed can be less than 20 sec per 52 cards. And I feel easy to handle casino games even with fast dealer.

Now I have bought Katarina Walker's book to progress to the mastery of Spanish 21. However I found this book only addresses the Hi-lo system, and doesn't give a guide to adapt my Halves to using on Spanish 21.

I have never, and don't want to practice the Hi-lo since I believe it can impair my mastery of the Halves. So can I adapt the Halves to Spanish 21 without adjusting the assigned values to the cards, and only by memorizing a new index chart? If yes, how should I do it? What materials or tools can I use to learn, or recalibrate and generate a set of new indices? Or if I do have to make some small change to the assigned value, how can I assess the value of each card and make the change?

I am new to playing blackjack, I have never tried a software or anything alike. I appreciate if anyone can address my question in details. Learning the Hi-lo can be my last choice but I want to avoid it as much as I can.

Thank you guys!