I am pretty sure that a 725, 730 or 750 system that wants to boot from a TU58
does so the same way it would boot from a hard disk -- by loading and executing
the first N blocks on the tape.  Our big problem will come on 780 and 785
systems, which need to load a named file from their floppy disks.  Once we have
the VMB.EXE and RSPB stuff worked out solidly for the uVax, the rest of this
will be pretty simple.  Distribution can be done the way I used to distribute
X11 -- folks can send several blank tapes/floppies/whatever to a volunteer,
along with a self addressed, postage affixed return mailer.  Anyone who is
already running BSD on their VAX can just ftp the correct image and use "dd".