To teach children and young people good character was the actual aim of the person that started the Boys Scouts. The idea was to learn and gain good character  as a by product of doing camping and team work. This was the one of the major goals of the Musar Movement of Reb Israel Salanter.

But Reb Israel Salanter's idea was more direct. That people would gain good character by learning books of Ethics about good character.

Both ideas seem to me to have validity, and  I think to combine them would be the best approach. To have summer retreats where survival skills and Musar are both taught.