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Hi all-
I am finishing up re-build of an 1987 'Trail-Rite' trailer I found in very good condition to replace my old, rusting and waaay too heavy trailer.
My hull is a custom 17 [1987 Super-Sport to non-BW CC] w/a Yam F70, after market CC, TTop and on deck 12gal poly tank.
Estimated weight near 1400#.
Trailer is 18' long, coupler to last X-member, 6'-4" between fenders; 94" width overall
MAX CAP=2370#. Obviously built for a heavier boat; square tube axle = 2-1/8". 14" wheels.

My Rebuild:
2 - 2x6 single bunks and 3 -12" TPR [Yates] tapered keel rollers.
The bunk supports locate over a 10' span and are 'inverted L' pieces welded to X-members.
I intend to use 2x6"x10' Doug Fir for the bunks.

Preface Q1: Before commiting to 'Thru-bolting' bunks, I want to load boat onto trailer temporariliy to check for bunk/hull clearances that don't interfere with boat full weight on keel rollers. To do so, I plan to fasten bunks to the brackets from below with 3/8 x 1.5" lag screws for my clearance checks. Then note bunk L/R adjustments, if any needed, unload boat and thenpermanently fasten bunks in final L-R positions with thru bolt-nuts.

Q1. Will lag screws be strong enough to fasten bunks to brackets for temporary test fit [or am I courting a minor disaster with a bunk possibly slipping out of position] ?
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Preface Q2: The bunk brackets on this trailer 'converge' or 'skew' to centerline about 2-3". per side; IE: the rear brackets measure about 28" L-R 'on-center' and forward brackets, about 24" L-R 'on-center'.
Since I'm going to use 2x6 bunks, I can install the bunks parallel, since the width allows me to offset at each end in opposite directions. Alternately, If I fasten bunks 'On-Center' at each bracket, they will 'taper' or 'skew' toward centerline, the same as the brackets.

Q2. Should bunks be installed parallel with each other [or is it just about neglible with a BW 17']?

Any answers, comments, guess's welcome.
Thanks for reading and input.
Joe

PS: my Personal page has trailer pics that may better describe situation

(changed to full 4 digit year per guidelines at the top of this page)