Wildy course used to be pretty viable since revenants weren't really a huge thread. Don't know if that's changed now though.
It should be safer now that there are no revs around, and people rarely go deep in wild to pk.
I really don't think wildy course is available at that level, but if it is, it's the best way to train agility at 48.
super heating is the best smifing exp/hr in the game.
edit: using gold ore + goldsmith gauntlets that is

