Here's a link to some scripts that will build a NetBSD cloud image for use on hosting providers etc.
https://bitbucket.org/cmeerw/netbsd-cloud-image/src/main/
Christof generously shared this with me, and said it was ok if I post here about it.
If you want to try the images out on a server, and don't want to build it yourself, www.linveo.com has them as an installation option. These are thanks to Christof, and he creates them with the scripts linked above. It has been by far the easiest NetBSD install I've done on a remote machine. Also, linveo has been great, and there's coupons out there. I am not affiliated..just a happy user.