 By 1921, companies such as Wadhams had at least 250 mainly celluloid floats in their catalog.Since those early days, the fishing float has become the subject of much practical and theoretical change.English anglers such as Peter Drennan (Drennan International) and Kenneth Middleton (Middy Tackle) and American fishermen like Chicago's ex World Champion Mick Thill (Thill Floats)  have built up large companies designing and marketing fishing floats.