Well, I will say that with young pullets, the place where they lay their first egg is REALLY important!!! If you want them to lay in the coop, then that should be the first place they do it. Otherwise, you have to lock them in there everyday for a week to make sure they have no choice.
We had a young EE pullet that laid her first egg in a garbage can (mostly full) up on the patio. We don't put gross garbage in there. It was mostly newspaper on the top, but it was deep enough that she thought it was a good place. I had walked out to go check for eggs and happened past, took a double take, and discovered her. I tried to air lift her to the coop, but it was too late. When I picked her up, there was her first little pullet egg. Darn. I took her and her little egg to the coop and put them both in a box, but the imprinting was already in that garbage can.
The next day, the chickens were out free ranging again. We had put the lid on the garbage can so chickens couldn't get in there. So here comes Hazel (the pullet that laid her egg in there the previous day). I watched her come over to the garbage can jump up on it and then look around. The look on her face said, "This isn't what I remember." So, she jumped down, went back over to the edge of the patio, turned around and came back to the garbage can. She looked like she was thinking, "Let me try this again, retrace my steps, make sure I am in the right place." She jumped back up and looked around, confused again. She did this several times.
Feeling sorry for her, I took her to the coop and put her in a box, but she got back out and came to the patio again. I ended up locking her in the coop and she did eventually find a box and lay her egg. It was very upsetting for her, though. She spent about an hour pacing in the coop, very upset.
So that is how the instincts of these critters work. They look for a dark, hidden place. One of the things I have done is prune the yard so that there are NO dark spaces anywhere in the yard for them to get in. That may or may not be a possibility in your yard. That helps if you can do it. The plants grow back and your hens lay in the hen house.
One thing to keep in mind is that if you are locking a pullet in the coop to lay her egg. Be sure to also lock up any other pullets you expect to lay that day. You can let them out after they have laid. But if you have one locked in and there are others that need to lay, then you will have those hens looking for a spot in the yard.
Good luck! Once they are all laying in the coop, it will be easy breasy, rice and cheesy.