my thought was if i make this small bet i can get some hands to call that would check back this river, but I guess realistically if the opp is decent they will fold all those hands no matter how much i bet here so I might as well bet like 2/3 pot and get called by some hands that call any sized bet.

by the way, isn't it completely obvious that opp had 48 of diamonds here? it sure surprised the hell outta me!