Just bought my first Lake Erie boat (Triton 2486) and also purchased a used (2002) 15 hp merc 4 stoke kicker motor for trolling. I noticed that the prop wables (shaft is not bent) so I am looking to replace the prop. It is a "A12 9P" can't find any specs on line so I don't know what that # means. My question is, should I just replace with same prop or is there a better choice for my trolling application? Thanks.....Frank.