Transpac you've been a lifesaver on this short notice BKK trip

I have been looking through Travel Fish and finding some good stuff.


A walking tour: Wat Kalayanamit, Santa Cruz Church, Ton Son Mosque, and Wat Arun. From Wat Arun follow some of these suggestions HERE, and then to the flute making area and/or the wet markets.

I am still trying to find a low key canal tour. I'd really like to find a hop on hop off type of boat but know that doesn't exist. Is this type of tour something that can be negotiated on the spot or do I need a tour company/guide?