Re: different boat question
 

Prop sounds right.

The early 13 Whalers were designed with a hooked hull for greater stability in high speed turns.
If you put a 10' or 12' straight edge against the kelson, with one end right at the transom, the ends generally touch, with about 1/2" gap between the straight edge and the hull about 7'-8' forward of the transom. At top speeds, the angle of thrust can easily overcome that hook, but with neutral trim, 75% of the whole hull length will run wet, rather than just the last 3'-5' you can get with positive trim. At neutral trim, no matter how much power you have, the 13' Whaler will never chine walk; indeed, it cannot.

Re: different boat question
 

Thanks for the info. When I hear the word "hook" I think of a old Mako I saw some years ago with a failing transom that seemed to pull the bottom of the boat up. Causing what several had said created a sever hook in the bootom. It was very noticable and the transom was very bad. Thats what I was thinking. Good to know thats how my old whaler came rom the factory back in the day. Thanks guys

Re: different boat question
 

I was gonna chime in on this but I was trying to locate some old photos first.

[image]http://i446.photobucket.com/albums/q.../photoJPG2.jpg[/image]

[image]http://i446.photobucket.com/albums/q...herb/photo.jpg[/image]

My grandfather purchased 2 Dell Quay Dories in the early 80's. one 11' and one 13'. These boats are sometimes refered to as the English Boston Whaler. The 11' Dory was powered immediately with a 20 merc, which was pretty much my first boat. It was rated for a 33hp. It can just be seen at the left of the first picture. I had a lot of fun in that boat, getting air, jumping the Seafari 25s huge wake :D

The 13 was never powered and sat upside down on the beach, until 98. Although the boat was rated for a 45hp and my intentions were to get a 40, I chose a 50 Yamaha with power trim. Minimum planing speed was awesome and you could carry on a conversation, without shouting, at cruise. The gentlemen above are correct, 3/4 to full throttle made absolutely no difference in speed. I think the 50 was a little much for the old boat as the hull split open at the keel a few times and I had to keep patching it. The nail in the coffin was the big crack opening up in the transom. The boat only lasted 3 years with the 50. I had enough of patching and put the 50 on a welded aluminum boat. I wish I had known of this site back then cuz I now know what is possible with old boats and kind of wish I still had those Dories.

Brandon