I've been reaching C2 regularly recently, but that may be more due to levelling up my deck than improved strategy. I keep playing the daily quests and sometimes do a few battles just for fun. Maybe I'll even learn to play better eventually.
I'm also not in a guild. Maybe we should start a 'Guild for the guildless'. I have no idea of what is involved.
If you're interested in really seeing how good you are @nealmcspadden has set up I think it's 8 accounts for tournaments, which are all the same!
Good idea for a guild, although technically it's an impossibility - as soon as you join a guild, yer no longer guildless!