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<blockquote data-quote="Bobscreekboy" data-source="post: 275104" data-attributes="member: 5408"><p>I just recently got a 1975 Mercury 9.8 for my 14' flat bottom and I've been trying to get more speed too because currently I get 15mph solo and 11mph with 2 average sized guys. I've tried some different trim positions with no noticeable difference. I also moved my cavitation plate from about 2" below the hull to being flush with the hull. That seemed to make no difference as I was still only getting 15mph. My motor has the stock 2 blade prop like yours so I'm going to order a new 3 blade prop very soon to try. I'm not sure if those changes will make a difference to your top speed but I figured I'd share my results.</p></blockquote><p></p>
[QUOTE="Bobscreekboy, post: 275104, member: 5408"] I just recently got a 1975 Mercury 9.8 for my 14' flat bottom and I've been trying to get more speed too because currently I get 15mph solo and 11mph with 2 average sized guys. I've tried some different trim positions with no noticeable difference. I also moved my cavitation plate from about 2" below the hull to being flush with the hull. That seemed to make no difference as I was still only getting 15mph. My motor has the stock 2 blade prop like yours so I'm going to order a new 3 blade prop very soon to try. I'm not sure if those changes will make a difference to your top speed but I figured I'd share my results. [/QUOTE]
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