first question, will running a left rotation prop in reverse to go forward have any repercussions on the drive or handling or stress on the steering ? second question, my boat is a 26' Firehawk cat w 502 mpi. I bought it w a 28p 4-blade. It would turn about 5200 and run about 80. I switched to a 31p 4-blade hydromotive, labbed. it ran 4600 and 82-86 mph, even 88-90 on the best air and water conditions. . I now have a 28p 5-blade and it takes off much better and cruises and accelerates better but the speed is only 78-79 at about 4800 rpm. if I lab the 5-blade, can I get a few more mph out of it? will that affect my cruise rpm vs. mph? I really like the 5-blade but I don't like giving up the mph. thanks.