I have a 2005 Triton TR-186 powered by a 2005 Mercury 150 xr6... I've had this boat for quite some time (7-8 years). I love bass boat central and read things on here almost daily, but rarely post. Never really thought much about it, but after reading all the comments about jack plates, it's made me start wondering something... my boat doesn't have a jack plate, never has since I've owned it, and always ran great (knock on wood)... my question is, should my boat have a jack plate on it? What's the purpose of one? I know one of the purposes is to get the right height/performance out of your motor. My motor does everything I need it to do, has a SS prop, gets up on plane quickly, top speed about 60-61 with just me, 58-59 with me and a buddy. Always have preventative maintenance done on the motor once a year, and it runs good. But just wondered, should I have a jack plate on it? Is part of the purpose of the jack plate to take pressure off the back of your boat so it doesn't eventually cause stress cracks where the motor bolts onto the boat? Or is it just to get the most performance/speed out of your boat? I've never had any stress cracks or anything like that on the back of the boat or anywhere for that matter. Just wanted other guys thoughts on this... thanks in advance!