GMan, I assume you made the mold from HS2 or HS3. I know of three ways to remove air from the initial mold making process, some of which are easy, and some not so much.
I am assuming that you already started by pouring from one corner and pouring slowly so that the silicone pushes the air out as it slowly encapsulates the master.
The easiest way is to paint the lure with the HS2 or HS3 first, then pour the rest of the mold. The painted portion is so thin the air escapes easy and leaves a clean "skin" against the lure. Of course, to make a two part mold you need to paint only the part that will get molded at that time.
The second method requires equipment, but is easy. You can degas the silicone by putting the freshly mixed silicone under a vacuum to remove the air bubbles before pouring. Alumilite sells the pumps and the chambers from their alumilite.com site. I have had excellent results by using my home food saver vacuum motor and the canisters they make for it. Of course, my food saver canisters are not that large so this works for smaller molds.
The third way is also easy, but ......
You don't remove the air, you collapse it. Your pour your mold and while it is still fresh you place it into a pressure vessel at 60 to 80 PSI for the entire time it takes for the silicone to cure. I don't have any pressure vessel that my wife will let me continue to use, but ..... but .... a pressure cooker with a pressure hose attached to the steam exit valve..... never mind. The pressure was probably not safe when I tested it.
The following link will take you to other molding methods with Alumilite that Mike has posted. They talk about all three methods if you go through all of the examples.
http://www.alumilite.com/howtos.cfm