Don't discount ebay. Side covers are hard to come by.
I mention ebay as there is a company in the UK I think called lpm plastics(I think) and they make an EXCELLENT side cover. You will spend a fair amount but the cover will fit perfectly unlike the meier covers which are much cheaper but have to be cut to fit and use a jacknut mount which is not the easiest to get into place. I know as I got the meiers a few years back and while I cit them well, they just do not look as good.
Another source would be david silver spares in the UK as well. They have good things too but like lpm, they are spendy but good.
So you can either get a cover from someone on ebay for a lot of cash for an old cover, do lpm or david silver, or maybe get lucky and someone gives you one for cheap, or a meier cover.
Keep in mind, you will probably have to paint the lpm or david covers and the meier covers, unless you like the plastic color.
The ride IS the adventure. The destination is just to get gas!