There are two ways to go and the best way to find out which is the best for you is to practice. One way is to take a half time break mid-way through your content and direct people to the sales page associated with your offer. Make sure you have a lot of hooky things to cover and that you seed that before the break so that they stay with you. I personally prefer to cover most of my content but to have one last hook that I don’t cover. I let listeners know that that hooky last subject is coming, but first, I want to invite them to XYZ, and then after about 10 minutes of walking them through the offer thoroughly, I circle back around, give them the last hooky piece and end the call with a quick reminder about the offer.