Traveling from Bol to Vis the best ferry options

Jerry, my guess is you are traveling as a foot passenger.

If you are traveling by car (driving) you will need to take a car ferry going from Brac Island to Split which is a Supetar to Split car ferry – details are here: https://www.croatiaferries.com/supetar-split-ferry.htm

If you are a foot passenger, then there are several options if you prefer to avoid going back to Split, which makes sense, as going back to Split is a long(er) route.

You can use Milna to Hvar route or Bol to Jelsa and then Hvar to Vis (Tuesdays only).

If you take the ferry from Milna to Hvar on Tuesdays, other ferry companies also run on this route: https://www.croatiaferries.com/milna-hvar-ferry.htm#September

And yes indeed, this is a better option as these ferries leave earlier in the day so you can still catch Hvar to Vis one that leaves at 4:30 pm.

Here is  a map:

(This is not the most precise map (in terms of timings) but it shows the main departure and arrival points):