An electric blower energized Coanda nozzle* would only have to run intermittently, and could be modulated left to right to counter crossswind conditions.
Here's what bottomless money can get you:
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The vanes on the left are to contain air spilling off a square front edge, but turn it around and the first vane could eat the boundary layer with each successive one reducing the final section.
I don't understand the longitudinal flutes [blue] at all, but they're very popular in these circles. The upright paddles [red] as well.
*You could fabricate a Coanda nozzle by intermittently slotting a larg diameter pipe and bending the intervening tabs 90 degrees on each end. Maybe put it on the tailpipe[s]?