How far ahead of time do you send the trade alert?

We almost always use Limit Order entries, which means that our order to buy is below the current market price, and our order to sell is above the current market price.

We typically know well in advance what price level we are looking to execute a new trade. And so, our style of trading, which forces the market price to come to us, allows plenty of time to take advantage of the trade alerts in most cases.