In UU I have a Sunny Day team that focuses on Taunt, setting up sun, Sleeping the opponent, then moving in Specs Typhlosion with no damage. because Scarf Typlosion is so much more popular, and because the sun increases damage anyway, people will often think it's a scarf and try bulky pokemon to eat Eruptions rather than revenge killing me. Specs Sunny Eruption 2HKO's all sorts of walls that get switched in, such as Milotic and Chansey.
The biggest problem with bluffing imo is that on Shoddy you will always see the same people over and over again. It's very powerful for the first match against someone, and after that it's almost useless. Unless you play in a lot of tournaments, you aren't going to be able to bluff successfully that often. As such, the best bluffs use pokemon that are perfectly viable anyway. For instance, you could switch a Starmie who doesn't have Thunderbolt in on a Gyarados and force him out, or bring Latias in on Scizor after a kill, making him think you have HP fire, even if you don't.
The biggest problem with bluffing imo is that on Shoddy you will always see the same people over and over again. It's very powerful for the first match against someone, and after that it's almost useless. Unless you play in a lot of tournaments, you aren't going to be able to bluff successfully that often. As such, the best bluffs use pokemon that are perfectly viable anyway. For instance, you could switch a Starmie who doesn't have Thunderbolt in on a Gyarados and force him out, or bring Latias in on Scizor after a kill, making him think you have HP fire, even if you don't.