I second the Harken unit. With the drum and upper swivel removed, the unit is still fairly heavy. If I were serious about the racing I believe I would go for a spare forestay assembly with turnbuckle, prefeeder, and TuffLuff. Changing out the entire forestay is probably no more difficult than removing the drum and upper swivel if you have two crew to help. You could use 30 ft of 6-in. ABS pipe as a transporter/protector for the Harken unit with drum and upper swivel still in place while it is off the boat.