I do still have it......but you have more pictures of it than I do since those pictures were on the old computer which now sleeps with the nano-fishes.....
I extended just the front and that was to get the winch posts in front of each boat....did that without knowing that you could buy a part to do that with that bolts to the frame........oooppss....remember as well that I did mine before the "wave runner" craze....waves runners essentially being one man boats and not the smaller JET SKI's so trailers for them are more robust and better suited for two boats...
Quirks?.....well LEGALLY you can't exceed 102".....and most boats side by side will exceed that since you need a space between gunnels to prevent rubbing.......solution to that is to raise one set of bunks a few inches so that the gunnels overlapp.....most of the barnegats that people would want to run as duals also have ALOT of rocker and bunks are STRAIGHT so you end up with just a small portion of the boat on the bunk....makes it tough to tie down and doesn't provide alot of support to the hull especially at the stern where you want it for the transom....solution to that is to use a bracket fore and aft on the board so that it BOWS in the middle...then tie down the front and rear and the bunk, (as long as its not too heavy), will flex to fit the hull......
It's worked for me.......
Hope that helps...
