As for me if I use decoys I always have a jake, I go turkey hunting for a few reasons 1st the fun of the hunt 2nd to share the experience with my daughter and lastly( well not lastly LOL) for a long beard so I don't care if a jake wont come in.

I have had good luck with just a hen and a jake even had a jake with just a stub for a beard beat up my decoy as a small gobbler walked around close to my decoy. I have this encounter on youtube if you'd like to see it at rockymtngobbler.
I'd say stick with a small jake but as RPD63 said all hunters have different tactics that work for them. Good Luck!

Ive had both gobblers and jakes come running into a jake decoy before. At the same time ive had both shy away from the jake decoy. I think alot depends on the birds in a certain area. Maybe even has to do with the breeding cycle and what stage its at. For me its all trial and error. If i notice birds shying away from the decoy on a given day ill take the jake down. If they dont seem to be bothered by it ill keep using it. The last few years ive had my best luck with just hens early in the season and jake decoys with a hen later in the season. Just my experience and best of luck to you!

RPD63 you were right.The next trip I had two more jakes come in and I could see one on the edge of the field doing something.I leaned out and I could see he was in full display but he didn't want anyone seeing him do it.LOL