As others have noted, the Chogogo is no more and is unlikely to return. IMHO, it was better in concept than in reality -- especially when an option like Divi is available. (Ferry: fly into CUR. Get luggage. Clear customs. Get taxi. Go to waterfront. Drag luggage to ferry. Wait. Board. Get seasick. Four hours later, get to BON. Divi: Get luggage tell them you are in transit. Check in. Wait a short time. Board. In 20 minutes you are there!)
Here are the options I am aware of:
a) Fly direct to BON via jet. For example, both Delta and Continental fly from the USA (IAH, ATL, EWR or JFK) to BON.
b) Rent a boat in CUR to BON. This would be spendy and will not be an easy transit. I would expect something like four hours (this would also likely require a taxi from the CUR airport to the dock).
c) Fly a small jet (i.e., DAE) from CUR
d) Divi. Take a valium and you are there in 20 minutes. And safer than option B...