John, there are plenty of motorcycle half covers out there.
I have this one that works with both my interstates (one without a truck).
https://www.amazon.com/Dowco-Guardian-26014-00-Resistant-Motorcycle/dp/B000GROHP6/ref=asc_df_B000GROHP6/?tag=hyprod-20&linkCode=df0&hvadid=312158603728&hvpos=&hvnetw=g&hvrand=3917627713509643334&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9008139&hvtargid=pla-450979152676&psc=1It is not a storage cover, just a travel cover. The idea is to have pouring rain diverted from just soaking your electricals (and seats) sitting out in a parking lot all night. And it keeps stupids from sitting on or screwing with your bike at the motels. And it helps with overnight dew. And it drys quickly (hang it on the motel shower rod).
This Dowco is very thin material and light (the Amazon add says 8 ounces), folds up to large softball size, not fully waterproof, but very water resistant, no metal hooks, just two elastic center straps (to pegs).
The only issue is whether it will stretch over your trike (on top). The rake in front should not matter, and the trunk in back looks pretty OE normal length.