trolling rod holder

[3shorts]

Where is the most convienient location to put a rod holder for trolling? I see some put them behind them. That seems like a hard place to see strikes. I would think that someplace forward would be good. What are your favorite places??
My kayak is basic and I will be modifying it for fishing. It's a "old town" otter. It is only 10' long,l but I think will work for flat water and some river fishing.