best placement for boat trailer bunks

[hockeyfool]

 I had a rough day last fall when putting the boat on trailer , where I mistakenly let a friend persuade me to power launch onto the
trailer, with bad results .
  He didnt guide the boat with any lines so when he had me at helm motoring into trailer, I believed he was sure it line up
straight -- nope ! 3 times had to reset on trailer, and then I saw the scrapes on my new bottom job; scapes from bad
distance judgement put marks into and past my 2 coats of Bluewater csx45 ablative and down past most layers of interprotect
barrier coat !
Can I get advice on best spacing/ placement for bunks ? How high up or low on hull should they be ?
The wider spread apart the bunks are would help at the launch, right ?

[BruceW]

I feel your pain. Once back in the day, I couldn't back the boom truck between two trees. My buddy jumped in and WHAM, tore the door out. Well, that was a mess.

After you tied your buddy to an anchor and left him in the middle of the lake, I'll bet you decided to retrieve differently.

There is a thread on here of the heights.http://cpyoa.geekworkshosting.com/forum/index.php?topic=4893.msg34303#msg34303. Brackish did the measurements and has been helpful in posting about them.

Best of luck!

Bruce

[skip1930]

Put the trailer below surface.
Yes my extended trailer tongue fully extended still puts my bubbling exhaust on the Ford Expedition into the water.  So?
The boat [my CP-19] is cranked into the bow's vee block by me standing on trailer. I walk down to the tongue from the truck's bumper.
From the dock I have one person holding a bow and stern line and a pole if a push instead of a pull is needed to center-up the boat.
I have two fiberglass driveway markers on the back of the trailer, angled to just touch the hull when the boat is centered.
I walk up the extended tongue to the truck and pull out of the water.

skip.

[brackish]

With the trailer set up as indicated on the referenced thread, I've never had any problems retrieving.  I can set the trailer with the bunks submerged about 70% without using my extension and without getting above the rubber in my rear tires and I just lead the boat into the keel guides and pull it up to about three feet from the bow chock and winch it the rest of the way standing on the trailer.