Free: Contests & Raffles.
I guess for me it would depend on how many days I could hunt. If I was limited to only a week I think I might just take the kids along on the scouting trips but leave them home for the hunt. Also, it could depend on what type of bull you are after. If you're willing to take any bull then it might not be that difficult with the kids along. I do know the Selkirk is one of the tougher units to hunt. I think I would do some scouting in September just before the season and then make the decision.
How much time will you have to scout?