I had not heard of a 19' Marlin Fisherman's Cuddy before so I Goggled it, cool boat! It's an inboard/outboard correct?
It looks like a "big" 19 footer. It appears to have a pretty sharp forefoot, so being able to hold the bow down at lower speeds will really smooth out the ride in a chop.
As the others have mentioned, it depends on what you want to achieve. Self leveling Trim Tabs such as Bennett SLTs or Smart Tabs will let you plane a bit slower and keep the bow down during takeoff. Get the larger ones recommended, The Bennett 10" x 10" SLT10 for instance.
Remotely controlled Trim Tabs will give you much more control over a broader range of speed, sea conditions and weight distribution, but as mentioned they are more expensive and take more time to install.
If you keep the boat in the water we recommend hydraulic Trim Tabs such as the Bennett 10" x 12" M120 system. This is what I would install if it were my boat, even if it was kept out of the water. It's a great system and takes up very little room on the transom, and fits under most swim platforms.
If the boat is dry stored you can consider an electric system such as Bennett's Bolt 12" x 12". It does take up a little more room on the transom, but takes a bit less effort to install.
I hope this helps.