When I fish Standing timber I drop a 1.5" YUM curl tail grub to the bottom and reel it up slowly. Sometimes the tree may be in 55' of water.
In Winter I will drop a 1/16 oz hair jig and do the same thing but I'll reel a few times than jig for a while and repeat that process until I locate fish.
I seem to do the best on standing timber in the summer months.
I hope this helps.