They get miffed about overdevelopment and lobbyists lurking at city hall. They've successfully battled high-rises, and don't even try to tell them what to do with their neighborhood's sidewalks. Go to just about any public meeting at Miami Beach City Hall, and you'll see a couple of them in the audience -- watching. They are members of the Tuesday Morning Breakfast Club, and they like nothing better than to chew on a squirming public official along with their coffee and toast. Each Tuesday morning this motley gaggle of Miami Beach property owners, entrepreneurs, and condo-board types converges on South Beach's oldest Cuban diner about 8:30 to get a clean shot at invited guests. When the chatter from their rear corner table rises above the general restaurant din, you know the guest speaker is being sliced and diced. Although the group began meeting in 1995, it became a force to be reckoned with in 1997, when its members took on high-rise developer Thomas Kramer and his $1.5 million campaign to defeat the "Save Miami Beach" referendum. The ballot measure passed overwhelmingly, and now a citywide vote is required whenever officials seek to increase density on waterfront property. Political foes sniff that the group is more attitude than substance, but we like the club's tenacity and political savvy.