I am going to pick up my '75 M-17 this weekend or next. I owe a few folks a report on the new trailer I am picking up in Bal'more on the way, so stand by. I would like to make a mast crutch/support for the back of the boat such as I have seen on the MSOG site. It looks as though these have been made by attaching boards (2x4's) to pintles. Can you tell me what to get in terms of pintles? Are there different diameters and lengths that I will need to know when ordering or picking up at a store? Thanks in advance! Robbin PS I will try and put some pics together regarding the new (to me) boat. PSS A couple months ago when I was asking for advice evaluating this boat I had an MSOG'er close to Leesburg VA send me a message to give him a call, which was lost when my old laptop imploded. If you might try again responding off the list I would appreciate it!