I've been meaning to try out monotype and I've having some fun using an Ice team. What scares me is the Stealth Rock weakness :< --- HG- (5199 4946 9856) BLK (1377 6526 3046) my flawlesses- http://www.smogon.com/forums/showthread.php?t=83163
Best team IMO is Normal-type but you troll your opponent with type shenanigans. A few pokemon off the top of my head:
Impostor Ditto: All EVs in HP and defenses. Use against Weather teams. Smeargle: I DARE you to try Spore, Spider Web, Imprison, and Transform. Smashpassing is fine too. Adaptability Porygon-Z: Offensive Conversion. Trace Porygon2: Defensive Conversion. Not Conversion2, ordinary Conversion. Scrappy Kangaskhan/Miltank: Ghostbusters. Kecleon: Skill Swap Color Change + Shadow Sneak. Sawsbuck: Hey look, a Grass-type that can use Camouflage+Nature Power to get a STAB Earthquake! Normalize Delcatty: You've got to be pretty gutsy to use this. Toxic and Thunderwave go. Lickylicky: Type chart victim or no, STAB Explosion is lulz.
Don't expect too many wins unless you are a GOD at prediction. --- I am Muhznit: Supernatural Bust Enchantment Sorcerer of the Random Insanity board. "I don't objectify women! I womanize objects!"
Dark. I was also told Electric is pretty good, but I can't get a team to work yet --- I'm taking swordplay classes, and I have a sword. But fear not, buy me an ice cream and I'll be nice with you. Black FC: 3740 1617 9889
Except it doesn't work... Steel itself has a resistance against being poisoned. For instance, even if you give a steel type the Ring Target, you can hit that Pokemon with moves like Sludge Bomb, but it will never be poisoned by it. If you want to poison a steel type, you would have to Soak it first or change its type.