I bit the bullet and bought the LL CR250. I put 2 float bags in the stern, but there is still room to spare. Should I add more flotation to take up the space, or are the 2 that are in there enough?
Some air bags are better than none. The CR250 has a huge cockpit (it’s going to hold a lot of water without you in it), so the more air you can get in it, the better. If the stern is half-full of air bags, you might want to get larger ones. If there is just some space between the seat and the bags, that is OK – gives you someplace to put your lunch and safety gear.
More importantly, make sure they are tied in well. It’s amazing how easily airbags can get ejected by the river.