Thanks for all the replies so far! I realized I may have a cheater/cheapskate option - I am planning to rent a uhell trailer when needed and they promise to have a built-in chock. Not the easiest but possible?
P.S. a tiny bit of context - the bike I am planning to use (my otherwise street CB919) does not have provisions for spools. Almost every bike I've ever had has had a centre stand, hence I do not currently have a rear stand that is good for this. I have a rear stand from my brother, but that is a spool stand - can get a paddle/swingarm rear stand BUT spool stands exist for a reason and trying to use a non-spool stand like this may be a disaster.
P.P.S. My bike has a centre stand - I was assuming I would be ok with simply tying that up as well, but it occurs to me that it may not pass tech at all with one installed. Any thoughts on that? Currently shooting for TMP as it is very close to me