I was talking with a few family members in West Virginia, They told me about AMCO out of Morgantown, WV. This company does it all and does not charge the landowner in any way unless they're consulting for you on a lease (Small fee). My cousin was telling me that they used AMCO to deal with Antero in Wetzel, AMCO got him more bonus, cost free at 17%, Marcellus Depth only, Hold harmless, Special Warranty, Pugh Clause and $25 shut in.  I spoke to a guy in Greene Co and AMCO was able to get him top pay of $8000 an acre fo selling his minerals.