to the conductor pipe 203 as will be hereinafter described in greater detail dotted lines in fig3 into engagement with ground 206 each tubular leg 207 extends from the ground 206 to at least the surface of the water 202 and preferably above the surface of the water 202 as seen in fig1 and 3 as seen in fig2 each of the two legs 207 are radially spaced from one another the pivotal connection means 251 is preferably disposed upon the conductor pipe 203 at a location at least at the surface of the water 202 and preferably above the surface of the water 202 as shown in fig1 and 3 preferably pivotal connection means 251 preferably includes a hook member 252 adapted to be fixedly secured to the conductor pipe 203 as by welding for each leg 207 which hook members 252 are radially spaced about the conductor pipe 203 as by welding as seen in fig2 each hook member 252 is associated with the upper end 208 of a leg 207 whereby legs 207 are freely pivotable with respect to conductor pipe 203 about hook members 252 and pivot pins 253 associated with the upper ends 208 of legs 207 preferably the hook members 252 are each formed of two hook shaped plate members 230 attached to or formed integral with a base plate member 231 base plate member 231 being secured to.