Echidna is a widely used fuzzer for Ethereum Virtual Machine (EVM) compatible blockchain smart contracts that generates \emph{transaction sequences} of calls to smart contracts. While Echidna is an essentially single-threaded tool, it is possible for multiple Echidna processes to communicate by use of a shared transaction sequence corpus. Echidna provides a very large variety of configuration options, since each smart contract may be best-tested by a non-default configuration, and different faults or coverage targets within a single contract may also have differing ideal configurations. This paper presents \emph{echidna-parade}, a tool that provides pushbutton multicore fuzzing using Echidna as an underlying fuzzing engine, and automatically provides sophisticated diversification of configurations. Even without using multiple cores, \emph{echidna-parade} can improve the effectiveness of fuzzing with Echidna, due to the advantages provided by multiple types of test configuration diversity. Using \emph{echidna-parade} with multiple cores can produce significantly better results than Echidna, in less time.