East Hampton Town officials have come up with proposed new legislation designed to tighten restrictions on taxis and prevent out-of-town companies from making a quick buck during the 8 to 12 weeks of summer. Councilman Peter Van Scoyoc, the East Hampton Town board liaison to the Montauk Citizens Advisory Committee, went over a draft of the legislation at a meeting of the committee on Monday. He warned, however, that it wasn’t simple to limit business in New York State. “We have very few tools to limit commerce,” he said.