September/October 2005 Volume 1, Issue 3
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©2005 Tsunami Fishing Systems

 
Does Size Matter?


Background  |  Finding  |  Attracting  |  Catching  |  Fighting  |  Misc & Conclusions

Range

As mentioned in an earlier section, lure trolling speeds for tuna and billfish usually fall in the range of 6 - 9 knots, which   is above maximum displacement speed for many small boats. This is the worst situation for fuel efficiency. With our old motor in Toy Boat 2, our mileage at 7 knots dropped to half of our optimum. With our current E-TEC, it looks like it drops about 25%, which, because it has better fuel economy to start, puts it right about where our old optimum fuel economy was, but in any event, you should keep this in mind when planning trips.


"Battle of the Bands"

There have been a few articles over the years talking about whether or not some types of boat noise attract fish better than others (see sidebar). The idea is that there are some hull -motors combinations which create sounds patterns that attract fish more than others. This is assumed to be some combination of engine noise, exhaust noise, propeller vibrations, and gear train noise resonating against the hull.

Variations of the story include: some models of engines are better than others, inboard motors are better than outboards, diesels are better than gas,  4-strokes are better than 2-strokes (or vice versa), large boats are better than small boats, Hull A is better than Hull B, underwater exhausts are better (or worse) than dry stacks, etc., etc. 

So the real answer is...no one knows for sure.There is a large body of anectdotal evidence to support the idea, but no quantitative comparisons. It does sound like a good excuse to pull out at the bar after a tough day of fishing!


Bottom Line

Skiffs have a number of inherent disadvantages when fishing offshore. We've tried to identify the major issues, and what you can do to even the playing field.  Check out the ideas mentioned, and see how they work for you. Be sure to post something on  our discussion forum. Or if you have another opinion, feel free to voice it!
 
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