First it would be helpful to know the body of water that you are talking about. Because there are different approaches to different water conditions (lake chop vs. big waves) both are nasty in there own right.
I fish a lot in the central basin of Lake Erie 2-3 foot wave heights are common, but you can get caught in 5-7 footers in the blink of an eye. I have a Tracker PT 175 TX and I'm sure your boat is more stable than mine, using the techniques described above in this forum and doing a few precautionary measures you can fish the big water with a little more confidence.
1) If you don't have an auto bilge I would consider getting one!
2) UHF radio with WX alert to keep up with changing weather conditions. And call for help if need be.
3) GPS is a great thing to have to know where you are going and how to get back with out searching.
4) 4-blade prop for your outboard 2-blade hi-thrust prop for trolling motor not necessary but helps
If you are venturing out and the wind is blowing gallons of water into your boat off the tops of white caps your trolling motor wont have the @$$ or the length to propel your boat! just something to think about