Bagel questions & answers:
First, if you have access to a bakery supply house, see if you can 
get hi-gluten flour in less than 50 lb. bags.  If not, add 1 tbl. 
vital wheat gluten (available in many supermarkets and natural food 
stores) per c. of flour.
Second, the dough should be quite stiff, barely tacky & not at all 
sticky.  When you think you've added enough flour, add a little more.
Third: See if you can find Peter Reinhart's recipe for bagel.  That's 
the closest you can come to real NY style bagel baked at home.
I don't know how long you boil yours, but I usually boil at least 1 
minute on each side and then put them in the oven immediately.  They 
tend to collapse if allowed to sit.
Evie