I'm in Goole, further up the Humber /Ouse than Hull and technically on the inland waterways in a small marina on the edge of the port. I know that there is currently no space in the marina i am in but there is another, (search for Goole Boathouse)
Rail commuting to Hudderfield from Goole is about 2hrs so not good for regular work. From Hull the travel time is less as there are faster trains, just had a look and some trains are 1hr 20 mins.
canal boats in the UK is expensive as they are mostly short term, one or two week hires for people on holiday.
If you were to base yourself in Hull, day and weekend sailing would be possible although as others have suggested there are not many places to go for day trips.
I have only once been into Hull Marina to wait for Fog
to clear before heading up to Goole. I found the Marina friendly, well run and i think it may be your best bet for a short term liveaboard
All the best