Check the listing for details. Big Jon Electric Downriggers 48" Boom Older Model. Color: Silver, Condition: Used, Made in United States. Listed at 250.00 USD. The Big Jon Electric Downrigger with a 48" boom is a reliable and durable piece of fishing equipment designed for freshwater fishing. Made by Big Jon Sports in the United States, this downrigger is constructed from high-quality aluminum material and features a sleek silver color. With a 48" boom length, this downrigger offers stability and reach for effectively positioning bait in the water column, increasing the chances of a successful catch.