CAEPLA is very good at negotiating for the landowner and working for the landowner's best interests.
When a landman comes to negotiate with you remember he/she is employed by the oil or pipeline company. CAEPLA helps balance that out as they are not employed by the oil company.
If CAEPLA has a meeting or information session, I would recommend going to listen to what they have to say before you sign anything.
CAEPLA was involved in a high power transmission line that went through my area. Yearly compensation for the towers doubled as well as other access and grass seeding isssues under the towers, liabilities etc etc. The power line company will tell you CAEPLA had nothing to do with yearly rent issues and seeding grass etc, but they can spin that however they like.
If the majority of landowners are signed up with CAEPLA they wield a mighty big stick and gives the landowners more power.