That's the main way to do it, yes. For Witch Head, it's not all that far from the bubble, and it's probably quicker to jump there yourself than it is to look for a carrier going that way.apart from jumping all the way there.
That one won't take you to Witch Head (Thargoids), but to a Guardian site in a different direction. Still worth a visit, of course.There are two mega ship ferry between Zende system and Witch Head travelling iirc on weekly basis. Check "Bridging the Gap" interstellar initiative for details
I agree walking is not an option.
Something tells me OP doesn't have access to that kind of a ship just yet, but you're not wrong.Its 4 jumps to get to WHS from the bubble (and back), if you are using the neutron highway with a 75+ ly exploration build ship (Phantom, DiaExp, Anaconda).
(Jackson's - HIP 41817 - 77 G. Canis Majoris - HIP 27395 - WHS. To way back: HR 1759 first)