Erdnase's description has the card coming primarily out of the side of the deck but I think most people actually pull it diagonally. Ex is right. Figure out how you deal and then attempt to do your bottom and second deals as close to how that looks as possible.
Thank you, but I deal from the side of the deck, when I am just putting cards on the table (what you do when counting how many cards there are), but I deal from the front of the deck, when I am actually throwing it, to deal it to people, but since most bottom deals are from the side, to keep everything the same, do you think that I should start over and practice doing the strike with the card coming from the side of the deck? So I will know two styles of the strike second deal.
As for usefulness? Erdanase even says it is primarily a technique for use with a marked deck. This backs up both Ex's comments and Benji's(shameless name dropping forgiven
) and leads me to conclude that it was not a workhorse sleight for a gambler even at the turn of the century.
What is a marked deck?
Not being a card cheat i can't conjecture further though I can say that I have found a lot of use for second deals especially for putting cards with gaffed backs into play
I talked to a few card cheats, asking them this question, and they answered that one card can make a big difference during a game, (but I was confused why not to use a bottom deal, because then you could control more cards, and now this thread makes more sense
) they also said that it would be useful for burned cards, and marked cards (which I googled, but I still don't know what it is, lol
), and for magic tricks, but (for magic tricks), couldn't you still use a bottom deal instead?