I don't think much about storage space as I am fortunate to live on a lake and have for many years including all the years that I have owned a boat. Lake Noquebay is a 2400+ acre shallow lake located an hours drive straight north of Green Bay, Wisconsin. With a big lake we get large waves including white caps from time to time. We also ski in fairly shallow water most of the time. Pretty much everywhere we ski a person can stand on the lake bottom. It is great to learn to ski on this lake as I just tell people to stand up when they fall eliminating the fear of drowning for some people. It isn't a good lake to sky ski on. Oops off topic already . . . . . . .
Storage space for gear is important if you trailer your boat to the lake or if you live on a lake and ever want to take your boat to a different lake. Dyna-Ski Open Bow boats have a decent amount of storage space for the size of the boat. My trusty 1987 Hydrodyne 17.6 XB (closed bow) does not have much useful storage space. The storage space of the 17.6 Open Bow and 20' Open Bow Family skier is the same except for the area under the sun deck on the 20' Open Bow Family Skier. The 20' Open Bow Family Skier has a ton of space under the sun deck alone.