pretty much, d ropping prone is never a good option. Its much better to go into evade and just move your highest movement.
Dropping prone would only be usefull if you are in a situation where you have no ranged weapon, no cover and are beeing attacked by range characters that you cannot reach, such as when you are on a boat or somehting.
In this case congratulations, your "tactical choice" of dropping prone is because your character would otherwise be useless