Downrigger for Gulfstream

Finatic

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Thinking about adding a downrigger to my Gulfstream this year and I've been looking at the Penn Fathom Masters. I'd like to use the rod holder mounts as opposed to adding a fixed mount base to the gunnels. If I use the rod holder mounts, do I need to add a backer plate or anything else to reinforce the rod holder? Also, should I get a 2 or 4 foot boom? I'm thinking about the 4 foot boom in order to clear the outboard bracket. The majority of my trolling is offshore out of Ocean City. I appreciate any advice.
 

Capt. Ed

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Downriggers

I use the rold holder mount on my Marlin without backing and have not had any problems. Maybe I've been lucky, it will be intereting to see what others say. I have the 4 foot boom and it works well.

Good luck!

Ed
 

Strikezone

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I have a Cannon downrigger with the swivel mount on my Seafarer. There is no backing plate and I haven't had any problems.

I have also used the Penn downriggers in the rod holder mount a few times without any issues.
 

Lainie J

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Downriggers

If you are looking to buy used i have 2 Penn Fathom masters, 4 footers with Rod holder mounts and weights if intertesetd. They are in great shape, i have no need for them in NY. All you need to buy is the mounting plates or swivel mounts. I will seperate if you only want one.
 

wahoo33417

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Finatic: If you're using the typical lead ball, then rod holder mount is okay, in my experience. However, if you're using a planer, like a Z-Wing, then I'd recommend direct mounting. Not sure you need to have a backing plate, but I've just used oversized washers with no problem.

I do use a Z-Wing and for that reason I prefer the two-foot boom (less leverage) mounted on the gunnel near the transom.

Rob
 

Strikezone

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I have oversized washers for all my gunnel mounted rod holders as well as my downrigger mount. There's a lot of plywood and fiberglass in the GW gunnels. You should be OK.
 

Finatic

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Thanks for all the responses. I'll probably add some oversize fender washers to better distribute the weight and stress.

3rd day- I figured the longer boom (4') would be necessary to clear the transom motor bracket.

Lanie- sending you a PM regarding the downriggers.
 

reel_time

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Strikezone said:
I have oversized washers for all my gunnel mounted rod holders as well as my downrigger mount. There's a lot of plywood and fiberglass in the GW gunnels. You should be OK.
Yeah, you MIGHT be ok. Why in world would you not just install the backing plate?
 

Curmudgeon

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There will be significant torque stress on a rod holder even with backing plates simply due to design. The holder mount will exert a lot of leverage on the holder, plus holders are oriented longitudinally, and have significantly less strength laterally . The gulfstream fishing I've done involved heavier tackle, heavier rigger weights, and higher speeds, all of which increase stress and strain on the holder and mount. I saw significant torque movement with mine at 2 kts and an 8# weight set at 40' merely due to boat wave movements. I went to a permanent swivel mount and haven't looked back ... :?
 

bc282

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depends on how you use your downriggers IMO.
if you use Z-wings or heavy balls (10+ pounds), or fish consistently deep (over 100'), i'd definitely recommend a direct gunnel mount over using a rod holder mount.

i'm running my 60" boom Scottys with 15# balls down to as deep as 300 feet trolled at 3mph with no issues (direct mount, big fender washers).

the length of the arm is not a big issue until you have to turn. generally the longer the arm allow for tighter turns.