Sure Tom, terrain seems particularly difficult. The LRA (about 400 fighters) is spread in small groups of 10 men in an area twice the size of Ireland, now unpopulated, and with plenty of natural cover.

To neutralize them you have to find them hence the problem... UAVs (lack of autonomy) or Satelitte Pix (small mobile groups-average speed of a LRA group is 35 Kms a day) can not help finding them.
Even if you spot them, UPDF has a couple of Hinds in Southern Sudan, and even on QRA these would need up to 30 minutes to arrive on site (idem for MONUC's Hip in Dungu DRC).
Surrounding the area is just unthinkable (lack of forces, different countries and sheer size of the area).

One option would have been to leave Kony alone for a moment, let him resettle, rebuid camps and once the LRA is regrouped and fixed...reattack but Kony is too smart for that and knows mobility and terrain offer him a huge advantage.

An other option would be to install UN bases inside this area with a small force in each plus organize a Psyops (leaflets) to convince isolated LRA groups to disarm. I guess this would be too risky in the eyes of the UN.

Arming the locals to allow them to defend is according to me a great idea that could turn to nightmare as locals would also use these weapons to settle local conflicts (confer Ituri, North Katanga and Kivu...everytime self-defense militias were created these turned to ethnic then undiscriminated violence)

Finally, to continue to try to track every group and intervene after every village attack hoping to bag some LRA is not very successfull.

So what ?????