The best time for deep trolling largely depends on the species you are targeting and the local conditions. Generally, early morning and late afternoon are considered prime times for trolling, as fish are more active during these hours. Additionally, consider the following factors:

1. **Seasonal Patterns**: Different species have their peak seasons. For example, tuna and marlin are often more active in warmer months, while species like walleye may be more active in cooler months.

2. **Water Temperature**: Fish are cold-blooded and their activity levels are influenced by water temperature. Monitor the water temperature and target the times when it is within the preferred range for the species you are targeting.

3. **Tidal Movements**: If you’re fishing in coastal areas, the tides can affect fish behavior. Many anglers find that the best trolling occurs around the change of tides.

4. **Weather Conditions**: Overcast days can be great for deep trolling as fish often feed more actively when the sun isn't shining directly. Wind can also affect surface currents and bait movement, which can impact where fish are located.

5. **Moon Phases**: Some anglers believe that fishing is better during certain moon phases, particularly around the full moon or new moon when tides are stronger.

For example, if you are targeting striped bass, consider trolling early in the morning during the spring when water temperatures are rising and the fish are actively feeding. Conversely, for deep-sea species like swordfish, nighttime trolling can yield better results.

Ultimately, keep a log of your fishing trips to identify patterns and optimize your timing for deep trolling based on your local conditions and target species.

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Topics covered in this question:

Water Temperature Tide Effects Fishing Times Species Behavior Deep Trolling