Southampton Arts Center

Competition runs deep as annual ‘RipTide’ returns

By GREGORY ZELLER // A business plan pitch-a-thon with real pull is returning to the Hamptons. i-Hamptons – the professional networking community that brought you The Spur and Spur East, members-only “entrepreneur’s clubs” aimed at East End impresarios – is diving back into business-building waters with its annual “Shark Tank”-like business plan competition, “RipTide: Sink or Swim.” This year’s Riptide III (unofficially updated as “$ink or $wim”) is set to distribute some $50,000 in grant…