Merco Marine's has a 4' x 8' work platform kit is great for one person working on longer boats. Kit includes angles, washer plates, bolts, rubrail, nails for rubrail and 2 - 20" wide, x 72" long x 8" high floats. You supply 4 - 2" x 8" x 8" pressure treated boards and 1 piece of pressure treated plywood - will support 300# - has 764# of flotation. And 2-HL-SM to use for tying platform for only $16.38. Add gray diamond pattern vinyl matting for only $59.95.