how to side count aces without Mess?

I can count Hi-Lo pretty good but i cannot do it with Side Count Ace. some ppl suggest use A,B,C instead bUt i rather use Number. so anybody has some easy way to side Count Ace?

Is there a Chart for Ace Double? Like today, i Had +5 count. 10 Agaisnt 10, Book said Double on True Count 4 or more. i might not do it if there is not much Ace leave. I lost that hand but i will win if i just hit.

some Double We hope to get an ace to beat the dealer.