Yep, the price of resin these days sure is an eye opener. Makes those Hermco Brackets just a little more pricey. Ohhhh, but are they worth it!!!!!
Aneyhoo, back to your issue.
Need more info, shaft/transom lenght/height?
That stressing in the corner appears to be the whole transom flexing, it also usually appears down by the fwd corner of the baitwell by the liner.
1) First of all, drill and find out if the transom wood is wet. If it is, then you should replace the transom. If it is not, then you need to strengthen the transom via some knees, then grind and glass those cracks. (This would be the cheaper method).
2) If you decide to replace transom, if you have 20" you should raise, but that will force you to lenghten motor. If it is 25" you are 1/4 the way there. You can replace from the outside, not that big a deal in my opinion. Then either plywood, Coosa or Penske Board.
There are many transom replacements on this site, search them. You can also see them here.
http://www.facebook.com/media/set/?s...5978942&type=3
http://www.parkeryacht.com/restorations
Don Herman is one of the best there is, Strick is also, not really sure what Strick does, I think he fixes horses, he should be a professional boat fixer, wait, he is too smart for that!
Anyway, Herman is good, one thing he can't change is the price of materials.
Soooooooo, either fix it properly yourself, or fix it temporarly yourself and save for Hermco.