All of the above replies regarding Pro's of brackets are absolutely right but there are also some Cons, mainly related to the aft CG shift caused by mounting the motor further aft. I discussed this at length in a post I did in about 2009 or so. I found this link to it
http://www.classicseacraft.com/forum...fpart=all&vc=1, but couldn't get it to work. Maybe our archives don't go back that far since the change in the website host. If one of the administrators knows how to get to it, I'd sure like to know, as I put a fair amount of thought into it!