Take a trip on a pinasse to one of the nearby Bozo villages. It should cost maximum 5,000 CFA for two hours. There is a pinasse mafia at the harbour that tries to control the pricing and asks for extraordinary prices up to 30,000 CFA for one hour!. Avoid them.
Arrange a trip up river in a pinasse to Timbuktu.
Satimbé Travel can arrange tours to Dogon Country with private transport. Be prepared to negotiate heavily on price.
Avoid Ashraf Tours at all costs. You stand to be ripped off big time. Ashraf Tours is reliable and they do what they promise. You pay for that, ok, but otherwise you are stuck with some guides which are interested in one thing : get the most money out of the less.
Avoid acquiring guides at Bar Bozo. While the bar is a fine place for a meal and the de-facto meeting place amongst travelers, there also is a less-than-savory element which will try to engage you for trips in a boat, to Dogon Country, or any other tourist-related interest.
