GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
Yes,you would need a large tank to set the high speed. With the 5.5 if you have the initial setting of 3/4 out from bottom, it should be fairly easy to make this adjustment while on the boat.