Just in case anyone is interested. I emailed Dicor and asked them which one of their roof sealants they would recommend for use on Alpha Ply and this is their response:
"It depends on the year. 2012 and newer, I would suggest the Dicor Ultra Sealant Primer and Ultra Sealant. Older, any of our products can be used."
2013 F150 Ecoboost Crew Cab