Undoubtedly a highly desirable addition - the simplest is probably just a
small panel fixed to the top of the arm intersecting the tangent to the tyre
along which most of the stuff flies. However this fails for those using the
standard trailer where the back of the tyre is up against a step. So for this
it has to be removeable or bigger and higher.
Having used roller blinds elsewhere in G-EMIN I have toyed with the idea of
one pulled forward over the aperture by a cord attached to the u/c arm. For
full closure some "gearing up" would be necessary, using the first cord to
rotate a shaft, spooling a second wound on a larger diamete, to pull the
blind. Not only is that more complicated but it all has to cleaned if it does
any useful work, so maybe a small fibre-glass or hard rubber flap which can
be quickly detached from the arm would be best.
Graham C
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