2017 Sylvan 8520 4-PT Unbeatable Value. Built with the serious fisherman in mind, the Mirage 8520 4-PT pontoon boat from Sylvan offers two front and two rear fishing seats. With plenty of space to reel in your catch, the Mirage 8520 4-PT pontoon is ready for your next adventure on the water. This boat is priced with an Evinrude 90hp engine and a single axle trailer. This boat also includes these added features: Premium Fish Pkg. Vinyl flooring Bimini top trailering legs Playpen cover Gauge Pkg. PMax depth finder This boat price already includes the $1,000.00 Sylvan rebate. This rebate will expire on March 31, 2017. Evinrude is also offering an unprecedented 10 year warranty on the engine as well. Great time to buy! - 2017 Sylvan 8520 4.0 Fish