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In my experience with my Dad's 21SE, that boat rides bow high and needs tabs partly down or the outboard trimmed in/down to not porpoise when on plane. I think putting on a heavier motor and then installing it farther back hanging off a bracket will make the boat ride like crap. I think your...

Welcome! I fish a Parker 1800 out of Cobb Island. The Potomac is a great fishery.

Nice, $43k seems reasonable especially in light of that being a 4 stroke. It's a rare/niche boat, so he might just have to wait for the right buyer who appreciates it.

That is a beautiful boat, with a lot of expensive work and parts. The Big Bays are hard to find, I've been looking for a Big Bay project hull for a while now. It's still 12 years old though, and most people are shying away from 2-strokes these days. It's worth whatever someone is willing to...

The 21SE hull had a significant re-design around 2011-2012. The old 21SE hull was a 'traditional' hull where the keel ran all the way back to the transom. The new 21SE hull has a step up in bottom of the back of the hull. This is presumably so that the engine can be mounted higher to reduce...

Wow, that bow liner looks terrible. I'd love a wider 18 with a taller bow, but that mess up in the bow makes me not interested at all. I assume that edge/lip is to hold a removable casting platform, which might make it look slightly better?

I was figuring ~500 ish RPM gain from dropping 2in of pitch. I guess that was on the high side, but only gaining 100 RPM told me that something else was wrong. After raising the motor my 14.75in diameter x 17pitch prop is right about where i want to be. I could drop another inch of pitch and...

Can't say I've done much high speed sharp turning, but when cruising at 26-28 mph and making 45-60 degree turns it does fine. Tring to do a sharp 90 at 30+ might be a problem, but I never have a need to drive that way...

What's the downside of a 2 piece hull with a liner? Is it less rigid than a traditional wood stringers with wood floor build? Looks like the liner eliminates the floor space under the gunwale cap, which i HATE. Not having that room for my toes while leaning on the gunwale makes the boat feel...

I installed a 4'' setback manual jack plate. I raised the engine so that the cavitation plate is 2'' above the bottom of the hull, when the plate is parallel to the hull bottom. This position is about 1/4'' higher than if the engine was mounted in the top hole. Motor was previously mounted...

The website says that the new 18SE is all composite construction and the photos look like it has more freeboard and a higher bow, but I don't see any specs to confirm the higher sides. Does the composite construction add weight compared to the wood stringers and floor?

I'm just curious, why the 2006-2014 year range? Were there major model year changes around those dates? I thought all of the 21SEs were the same hull and design, with options for forward or rear platforms, etc.

The hole shot is awesome, it'll jump up on plane and put you back in the seat. Its a 1998 1800 with a 25'' transom. Motor is a 25'' shaft with 2.25:1 gearcase. Cavitation plate is currently 1/2'' below the back of the hull keel. Motor is mounted in 2nd hole down. When i dropped from 19...

Thanks everyone! I ordered a 4'' setback jack plate and will be installing it this winter. I won't be putting the boat back in the water until spring, but I'll report back on how it rides and what my optimal height is.

More great info, thanks. I went from a 14.5'' 19 pitch prop to a 14.5'' 17 pitch prop of the same design/brand and only gained about 100 RPM and 1 mph. I was expecting much more out of the prop change, which is what lead me to the engine height issue. I want to get the engine height just...

Longislandifsh, thanks for the info, you've just convinced me to order the 4'' setback jack plate. What kind of speed / RPM increases did you get at WOT and cruise after raising your motor? I'm trying to figure out what sort of performance improvements i should expect. Thanks again!!

Thanks for the pictures! Mine is also one from the lowest setting and looks like your photo on the right, with the cavitation plate completely underwater when on plane and trimmed up. How many RPM and MPH did you pick up after raising the motor?

My biggest concern/question is that I don't want the 4'' setback to cause the boat to porpoise. The 115 E-tec is relatively light compared to a 4-stroke 150 that the boat is rated for, so I'm thinking it would be fine? The boat currently rides very flat, even with the motor trimmed up a good...

Wasn't planning to do a modified pickup. I'm not planning to go crazy high, I mostly want a 4'' setback manual jack plate to help me fine tune my engine height. I know that my motor is currently too low, but am concerned that going up one hole (3/4'') might be too high? It's a real pain to...

I know this is an old thread, but I'm now thinking about adding a 4'' jack plate to my 1800 and would like to hear from people who have done it. Are there any downsides? I assume a 4'' setback won't make the transom sit too low in the water? I'm running a 115 E-tec and even with 2 guys in...