Will, I don't know if you are a legit new member, late to the party, or a sock of someone, but I will treat you and hope you are legit.
Tracking a second table really is not that intense. Spotters on blackjack teams track 4, 5, 6 tables at once. Slightly more challenging because you can miss seeing a card here or there if your line of sight becomes blocked. But spotters deal with that too. Something most of the detractors that don't even play blackjack fail to understand is that the count need not be perfect. All you need is to know which table is more favorable than the other.
And speaking of "missed cards" you don't see, there is about a deck and half worth of them in every standard 6 deck game. Any cards that you might miss when counting, whether at your primary game or a secondary game, just gets added in with the rest of the cards you don't see. Missed cards basically is a slight decrease in penetration. THAT IS ALL. Not ideal, but really pretty minor.
Anyway tracking a second table is something that was great while it lasted, but the opportunities are farther and fewer between for me these days with fewer and fewer real BJ games and more and more variations and carnival games.