I have towed sailboats bigger than my own 30 footer.
Be aware of what is going on behind you and be prepared to abort the tow. Make sure the towed vessel is doing what you expect.
I once towed in a 40+ racing boat. The captain decided to let his son take the helm. Several times the son set his own course and yanked my boats stern, they left their jib up so if I slowed the apparent wind would bring them up along side me, etc.
Finally I had to tell them what for.
Still, as I approached a mooring for them the son took over again and ended up dragging my boat sideways for one last time.
On another occasion I refused to tow a power boat because everyone on board was so drunk they could barely stand up. They where in no danger and I stood by till they got a tow.
Hint, use THEIR LINES for the tow so if you decide to abort all you won't lose any cordage