The first blind drill can be run on an outside leg of your pattern blind field. I use the outside leg that was taught first because it's the one that the dog has run most.
After you can pretty much line all three legs. Next time you go...
1. Run outside leg with no bird boy (BB) in field.
2. Place BB in field 1/2 way to blind and outside of line maybe 30 yards or so and run blind(no throw).
3. Throw mark (about 1/2 way -15 yards - toward the line to blind) and retrieve, then run blind.
Lardy says at this step you are not looking for tight lines behind gun. That comes later.
The reason for putting the gun out is to create suction to pull the dog off line to the blind and give you an opportunity to cast to a well known location.
The reason for throwing the mark is that the dog will begin to ignore just the bird boy and line the blind so you don't get to cast. So retrieving the mark increases the suction and most times creates a casting opportunity.
*if your dog is so compliant that he lines straight to the blind even with these distractions, then you could throw mark, run blind, then pick up the mark. If you get plenty of casting in without doing this, save it for later.
Now you go to 4 or 5 different locations, teach a single blind, add the BB, then the mark as above. Alter the position of the BB with each successive blind drill so the you have opportunities to cast both left and right.
With each successive blind drill, you will need to teach the blind less and less and by the 4th or 5th one you can run it cold if all is going well. If you teach the blind too well , you will not have opportunities to cast.
After this you come back to your pattern blind field and out a couple bird boys out there, one being between the middle and an outside leg. So you'll throw the outside mark, pick or up, run a blind, throw the inside mark, pick it up, run the other two blinds.
Later, after you've run a lot of simple cold blinds, you can come back to the pattern blind field and teach the more complex blind concepts like poison birds, tight behind guns, through old falls, etc.
*Make sure you throw the marks toward the line on those first blind drills so that you are casting away from the bird and not away from the gun.
Lastly, I've run pattern blinds on less than ideal grounds. The thing you have to understand is that it's gonna be more difficult for the dog, so will require more teaching & simplifying (and patience) on your part. I'd likely stay where you are and teach that center leg (if it allows room to come back and add the diversions later) rather than starting over. But you know what you're up against with your current location, so moving again may be best.
Edit: this is from memory. I'd watch that DVD again to make sure I haven't left out a key bit of info.