I vote for electric. It takes a really big boat, like a twin engine CC, to need hydraulic. Less to maintain, cheaper and way easier to install. Now with that being said, hydraulic 100% if you leave your boat in the water full time, ie if you're also going to bottom paint it. Call skeeter and see which ones they put on that exact boat. Lenco makes a fine trim tab. Download and give this a shot so that you can understand how they work and what they will do for your boat.
http://www.bennetttrimtabs.com/simulator.htm
Then take a minute and read this:
http://www.lencomarine.com/compareelectricv.html