A lot of PLCs make the mistake of planning the meetings first and then the outing. Start with the outing. The meetings exist to support the outing.
PLC Planning Process:
1) Figure out what your outing will be. Choose something interesting and exciting.
2) Make a detailed plan of your outing making sure there is stuff for all levels of Scouts to do. Make sure all time is accounted for, and it is FUN, new and exciting! A template is available for outings in the Scoutmaster Handbook
3) Based upon the skills needed on the outing, plan your instruction sessions at your troop meetings, those are the most important (and at times most boring) parts of your meeting. Make sure there is something for each level of Scout to learn.
4) Plan the rest of the meeting.
5) Establish what your communication plan will be to make sure all patrols are engaged
6) SPL should go over the above with the Scoutmaster prior to the PLC for any additional suggestions or comments
Exciting and Fun takes planning!