How to use Ace Side Count in Spanish 21?

How to use an Ace Side Count for playing purposes in Spanish 21?

I am assuming it will be most useful for doubling 9, 10, and 11.

My tag for the Ace is -2, and my tag for Tens is -1. As I understand it, the Ten tag is the only relevant one here. So for doubling 9 or 10 I should calculate the excess number of Aces remaining, multiply by 1, add this to my running count, and recompute the true count for the playing decision.

Example: 4 decks out of 6 have been dealt and the RC is +10. I have seen 14 Aces, which means there are two excess Aces remaining (since I would expect to have seen 16 after 4 decks). I am looking at 10 vs a dealer Ten. My index for doubling is +6. My true count unadjusted is +5, so I would normally not double. But I add 2 for the excess Aces to my RC to get +12, and now my TC for this decision is +6, so here I would double using the extra info from my Ace Side Count.

And for doubling 11 I should do the same except subtract from my running count (since doubling 11 with excess Aces remaining is less desirable).

Am I on the right track?

Can I ask what count your using?

I was using Hi-Lo with Ace = -2 at the time I wrote this. I moved up to a level-3 count after that and forgot about trying to side count aces, but now that you remind me maybe I can squeeze even more EV out of this game (since EV is about all I've been getting out of it).

Now I have to ask, is for one, why were/are you SC Aces, when the Ace is already Ace-reckoned? This can be hazardous to your playing. And secondly, if your already using a L3 count i definetly wouldnt worry about SC Aces, esp, if its Ace-reckoned.