wow 6 hours. very unlucky are you trying to find one with drizzle? if so i should prevent you from wasting any more time by saying you can't get drizzle poliwags at the moment :l
My babies Eevees are named after gods of various sorts with some regard to their typing.
Except Jolteon. Erra = god of chaos, also my favourite band
The Pokes in rotation are also named after bands I like (except Ninetales and Gardevoir)
A new door should open up in the map where the giant Steelix was, i think on the left side somewhere. Just backtrack until you get to the machine. Oh, and if you continue further in you'll find a surprise...
Actually you'll find the Railnet (opal side, before rock smash) is pretty good for speed as well, because every wild encounter is a pokemon with Speed EVs (Zubat, Stunky, Woobat)
There is already a thread on this made by yours truly
http://www.pokemonreborn.com/forum/index.php?showtopic=4560
Also, the pickup lists are from BW1, not BW2
Not many tank Bug types about, though. The only one I can think of at the moment is Vespiquen, who has...
*checks*
base 102 Def and Sp. Def, but only base 70 HP
Unfortunately there is no way to get Healer on Chansey regardless anyway. It is a known glitch that Pokemon with three abilities cannot obtain their Dream World ability.