22 Jul Harbor Freight Boat Trailer Update Posted at 20:22h in Boat, DIY / How-to by Jeff Furr After adding a few pieces of galvanized angle and some Trex boards, I turned this 4×8 folding trailer into a boat trailer. Tags: 4x8, boat, Boyak, Compact, diy, easy, fishing, folding, freight, Harbor, how to, Small, trailer