Boat supporting dolly

Claim 1

IN COMBINATION: A BOAT; A FRAME MEMBER OF INVERTED U-SHAPE STRADDLING SAID BOAT CENTRALLY ALONG THE LENGTH THEREOF; SAID FRAME MEMBER INCLUDING A TRANSVERSE BIGHT PORTION DISPOSED ACROSS THE TOP OF SAID BOAT AND A PAIR OF LEGS EXTENDING DOWNWARDLY AND REARWARDLY FROM THE OPPOSITE END PORTIONS OF SAID BIGHT PORTION ADJACENT THE SIDES OF SAID BOAT; GROUND ENGAGING WHEELS MOUNTED ON THE LOWER END PORTIONS OF SAID LEGS; MEANS FOR ROTATABLY AND RELEASABLY SECURING SAID BIGHT PORTION AGAINST FORE AND AFT MOVEMENT ACROSS THE TOP OF SAID BOAT WHILE PERMITTING ROTATION OF SAID BIGHT PORTION WITH RESPECT THERETO; AND FLEXIBLE SLING MEANS SECURED AT EITHER END TO SAID LEGS AT POINTS SPACED BELOW THE LEVEL OF SAID BIGHT PORTION AND EXTENDING BETWEEN SAID LEGS TO PASS UNDER THE BOTTOM OF SAID BOAT, SAID SLING MEANS BEING OF SUFFICIENT LENGTH TO PASS LOOSELY BELOW THE BOTTOM OF SAID BOAT WHEN SAID FRAME MEMBER IS MOVED INTO A GENERALLY UPRIGHT POSITION BUT BEING SUFFICIENTLY SHORT TO CLAMP SAID BOAT IN POSITION AGAINST SAID TRANSVERSE BIGHT PORTION WHEN SAID LEGS ARE INCLINED REARWARDLY TO AN ANGLED POSITION WHEREIN SAID BOAT MAY BE TOWED.