I have been upgrading parts and pieces of my daycruiser. I am now to the prop and I am looking for some experiences from you guys that had 3 blade nibril props and switched to steel 3 blades. What sort of changed did the boat have and what size 3 blade do you use? Currently, I have a 21ft Howard with a slightly stepped up 454 and an Ace/Champion v-drive. I need a little motivation to spring for the cost.