Hi Peter,
due to the nature of my customized GS, I don't have a center stand as well.
However, to have it standing upright for servicing, loading for trips and to reduce space consumption when parked in my garage, I use a front wheel stand. It is sold by Rennkuh.de for 160€ and works like a charm.
When comimg back from a trip I just drive into it and jump off the bike.
It is as well great when transporting the bike in a van or on a trailer, as it eliminates the need for a rail . I just put the stand in the van, push the bike in and fix it with belts.
I just have a picture with the bike at hand. I am going to post some pictures of the stand alone tonight.
Regards
Frank