In the High Probability Selling process, we establish our agenda by doing it, not by talking about it.
We take out a structured, written questionnaire, read the first question to the prospect, write down the prospects answer, deal with any issues that might come up, and then close on that point.
Then we read the second question, write down the prospects answer, deal with any issues that might come up, and then close on that point, etc., until all 20 to 30 questions are answered, and 20 to 30 commitments have been made. That is one reason why closing is almost automatic in our sales process.
Salespeople who use this process average 74% closing rates. Keep that in mind when you are temped to explain why it can't work.