I don't believe that Harley Bubble will help in humid air,
That Bubble has a fan and you'd be constantly replenishing moist air.
I believe I'd get me about 8-10 $5 big size silica gel packs,
then sew silica gel packs into 4 corners of couple of big towels
and get into the habit of rotating them thru the oven about every week,
a couple of hours at 240F and they're good as new. I'd set up a specific place
where I was always going to park, put a larger plastic barrier on the ground
that I'd pull up and around the bike and pretty much seal it in airtight,
when I was ready. I'd park the bike, cover it with the gel pack drape
and a soft dry blanket then a first plastic layer hung down from on top,
then pull up the outer plastic layer and seal it. Re-wrap it in freshly cooked
gel packs every week, on a dry day. Maybe get a cheap weather station
with a remote probe to check humidity inside the wrapper.