When I did research for my master’s degree, I used camera traps on private ranches in Texas. Mtn lions were widely accepted by professionals as being present, but at VERY low densities. If you found tracks somewhere, you might not see one there again for a year or more.
If they’re present in your area, I’d bet similarly low densities and your trapping effort will have to be pretty intense (and likely combined with scent lures) to document their presence.