Not to kick you when you're down, but the cover has to come off the lift when the boat does. Fun with numbers, a rough calculation for wind force:
0.00256 x the square of the wind speed x Area
For a 60 mph wind and a 10'x20' cover that works out to 1,843 pounds of force. Of course angles and drag coefficients affect everything, but the numbers add up quick and boat lifts get flipped.
Kick away. I had concerns about the blowout on the new cover not being adequate, but had never had lifts move with boats on or off for 20+ years. I went to the well one too many times, and am paying the price.