I built a 25 ft incline 'detachable' (I call it detachable because I built it in sections which can easily be unbolted to make the rail shorter/longer) rail and looked around for scrap wood from which I made my upright supports and triangle bases, then I bought like 8 : 2x4x8 Pressure treated 2x4s and 2 : 1x12x14 composite decking pieces and some hardware and all told it was like $150.00 which was not to bad in my books for a good time on the water. I got my composite from Lowes. Beware it building with composite, the **** hurts like a mother when you fall on it. Knowing this, after I built it I also waxed it to make it a might quicker and it doesn't hurt quite as much. The key to building a rail is looking around for scrap materials or stuff you could pick up super cheap because your going to end up spending the majority of your cash on the composite and hardware.
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