Well for the 3rd time in a row the 'trucker hitch' tiedowns on our Seafarer 30 have slipped loose under 40 inot winds, resulting in a cover that is blowing around and generally not working well. Does anyone have some ideas for attaching the winter cover so it will withstand heavy gusts ? Currently we tie lines through the grommets of the cover directly to the custom-made heavy rectangular welded steel boat support frame ( boat is not supported by jackstands.) I have contemplated the following :1) heavy 1 gallon orange juice bottles, filled with sand, suspended at the bottom of each tiedown line by tieing a bowline/ clove hitch through the handle of the OJ jug etc; 2) 2 long horizontal 2x4s running longitudinally on port and starboard at ground level waist- high, each bolted to the boat stand frame, with eyebolts installed thru which I can place a number of bungee tiedowns running up from each of the the horizontal 2x4s to a cover tiedown.It is driving me nuts to keep driving 2 hrs each way to windswept Erie PA to tighten the 'trucker hitch' kayak style knots to keep this cover tight .... I think what is happening is that any knot will loosen under the wind stresses of heavy gusts and the cover gradually works loose. I'll welcome any and all suggestions !! Thanks, *cryMitchM