I think my biggest problem when I started using SSH was my post flop play. I would tend to get to agressive with marginal hands when it was obvious I was beat. Having played different styles of tables, I find that it's not that difficult to switch between starting hands giving the type of table you're at.
It helps from LP because you can actually vary your requirements based on the people already in the hand. From EP, you almost have to have a good idea of what the over all table will do in most hands (and that can change hand to hand.
I found that the best stratagy for me is to play super tight from EP (don't come in if you can't do it with a raise), and loosen up from LP if you're at a loose table. You will have a greater variance because you'll be putting in more bets, but over all you should win more when you hit the big pots. Obviously, when in doubt, fold. It helps if you have a good idea of what you're going to do post flop. I've played sessions where everything was super tight and if I came into the pot, it was with a raise.
Over all, I think SSH helped me with my post flop play more then anything, but be advised, while you may know what the correct move is, you're opponents won't so it's difficult to put them on a hand sometimes because they aren't playing the way they should...this is actually a good thing because it also means they are calling with hands they shouldn't, but sometimes they won't raise (to tell you your beat) when they should so you'll lose because some guy didn't bet his nut str8 when he should have...Again, the amount you lose in those situations should more then be made back when you win
