f 100 Prop

[viperboy700]

went for a ride in my boat and lost my prop and all the washers, shims ,spacer and so on. My question is what was the pitch of the prop Its on a fairly light 17' lund pro sport. But the kid at the only local dealer stares at me with a blank look an his face and say I got to know what pitch. any help would be great

[viperboy700]

forgot to add its a 2000 yamaha f 100