Jay Work opened his first of five Grateful J’s smoke shops in Margate in 1995. He sells familiar smoking products: water pipes, rolling papers, and lately, an array of THC-infused hemp products that distributors contend were legalized under the 2018 Farm Bill. Customers might be surprised to see signs that Work posted around his stores urging them to vote “No” on Amendment 3, the measure that would legalize adult-use marijuana in Florida. The number of smoke shops in Florida, like Grateful J’s, has increased by more than 1,000 since 2019, according to data by the state Department of Revenue.