It is a 15 foot aluminum jon boat with plenty of open space in the front and on the sides to add foam. Correction, Keep it all in the top half. Use ONLY marine foam. I was looking to get a 20 foot skiff built. There are 2 ways to put foam flotation in the boat. The slip can be entirely enclosed, or space can be left—as a 45-degree “V” or square end—in the fill-in for smaller watercraft docking. Small – Fits 12 to 16ft boats with boat width 48" or less. I am not being a smart as_. If I add styrofoam in the middle under the floor it will only add 300 lb of floatation. This customer in Buford, GA purchased 4 blocks of 1 lb density EPS 6” x 24” x 72” and cut them to fit in the hull of his row boat. I've got a 20' aluminum with a 115 hp 4 stroke on the back that just makes it seem a bit back heavy. NOTHING in the bottom 1/2. Fill-ins are available for any size Flotation Systems slip, and are custom-made to suit your application. Flotation styrofoam for starcraft. Pods are to be welded or bolted to stern of the boat. Top. Pod width: 15-1/2" Made out of 0.100 inch thick 5052 marine grade aluminum Each small pod is 11 inches wide at the bottom. I found one other place that had the same quality to offer but for $2,000 more for the same boat. In most cases, the hull will stay afloat due to the presence of some floatation material in the forward bow section of the boat. My only option is to use the spray in foam, it has the lining inside of the the cross bars and the floor is covered with the checked plate aluminum. However, it is possible to add some additional, low-cost buoyancy to the hull and greatly improve your chances of surviving a flip with almost no water ending up inside the boat. NOODLE FACTS So don’t trust me. I'm tempted to have a couple of flotation pods welded onto the back, but have reservations of how that affects handling, speed, and ride. Copy from a new boat that has VERY same layout as yours.----- If at all possible. Boat weight in the water is 600 lb. Right and wrong places. Flotation foam for Boats. ( calculated using weight in the air of 1000 lb). The choice was easy. In the spring and early summer, we receive a volume of inquiries from folks with older boats wanting to install or replace foam for flotation. If one were to add enough flotation material to do the job, there could be a substantial loss of accommodation and storage space, perhaps even making the boat impractical to use. (or kg per cubic meter) G = A percentage of the weight of Machinery (engines, sterndrives, outboards, etc., usually 75%) For Outboards See Appendix A at the end of this lesson. I am replacing floors in 1973 16 foot aliminum starcraft (70 h.p. I was wondering about how to prep a aluminum boat that was to be foamed to insulate/sound deaden/add floatation so as to not create the same problems the gas tanks in sea rays had? I need all the feedback I can get from you guys!!! Floatation pods are common on aluminum boats if the owner plans to frequent shallow water. Fb = Amount of Flotation need to support the swamped boat Fp = Flotation needed to support propulsion equipment B = Buoyancy of flotation material in pounds per cubic foot. CTMD Posts: 276 I am thoroughly pleased with my boat and Bobby and Lynn are really nice people. Anyone have any good/bad experience with flotation pods added to the rear of an aluminum boat? There is no other room for styrofoam. The outside edges of the pods are angled to match the angle of most jon boat gunnel walls. They’re a staple on duck hunting boats and common on many other aluminum boats including catfish boats. I have a boat that does not have enough foam to suit me in case it gets swamped. This is on a used boat that has bin in salt water, not new aluminum. Johnson outboard). The pods extend beyond the transom and add extra floatation to lift the back end up out of the water which is the heaviest part of the boat. PLEASE LEAVE A LIKE IF YOU ENJOYED!!! I shopped around at three different places and checked out what they had to offer. T hus, in the larger boat, especially those having many items of dense, heavy materials, other approaches to preventing sinking are resorted to. Keep all the foam block or spray in place in the TOP HALF of hull.