BIGVEE™ has a huge 15 inch wide Vee shaped catch area, so when you drive on, even if you are off centre then the Vee shape will catch your boat and guide you back into the centre.
All professional fisherman “drive on”. They understand the risks and difficulties of attempting to manually move a boat onto a trailer against the wind and tide. They also have no interest in the physical effort winching a boat up a trailer involves. Plus driving on is a huge time saver.