The sak sits on the floor in front of back seat. Its almost as high as the seat and about 6inches in from each end. Ive seen pylons on this type of boat, but personally I would rather have the tower. Takes up less space. The prop is sst. If Im not boarding, just out cruising with the family for the day I will use either a 3 blade 19 or 21. What size motor do you have in the 185? Ive got the 5.0 and all 3 props work fine. I also put a hydrofoil fin on the drive. It planes out @ 12 mph.