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Was getting 14 mpg with the 30hp 4 stroke.  Motored for 3 hours yesterday following 5he break in procedure and used 2 gallons of gas.  More importantly, was able to take the bag of sand out of the bow and the boat sat nice on there lines.  Tilt and trim also nice to have.

Nice looking set up!

I bet it's one of the lightest, most fuel efficient Feather Craft boats on the water.

Got the Feathercraft on the water with the 20hp Suzuki.  Was the break in period so didn't get to play much but so far happy.  Half throttle got her on plane as a low 13mph.  Two thirds got her up to a comfortable 18mph.  Max speed (only did for a very brief period) got her to 24 mph. 

The Suzuki 20hp with remote and tilt n trim is 120lbs.  Have gotten excellent power out of the other 2 Suzukis I have owned.  The new 20hp let's me move the 30hp longshaft back to the 16' Arrowglass Cougar.  Even though that boat weighs 850lbs, the 30 was able to get it and 4 passengers up on plane with max speed of 23mph.  Ran 28 with just me onboard.  Preferred cruising speed is 18mph....cover territory and doesn't pound as much.  It was incompatibility between the older 2 stroke outboard and the Lifepo4 battery that lead to the meltdown.  Didn't think about the older outboard charging not being set up for Lithium.  Picture is of the Arrowglass Cougar with 6 onboard and, no, the 30 couldn't get on plane with this many people which is why I tried the 50hp 2 stroke.

That tohatsu 30 is really light.  The 20hp Suzuki with remotes and tilt and trim is 120lbs.  Admittedly, this is my 3rd Suzuki and have had great experience so that is why I stuck with that brand.  I already switched to Lifepo4 which works great for newer 4 strokes but goes up in flames for older 2 stroke motors. Wouldn't it be nice if you could test drive motors on your boat?  My experience with Suzuki's is they have amazing power for their rating.  Running a 40hp on my 1952 Lonestar cabin cruiser and get 25 WOT and 10 mpg average.  The 30hp got 14 mpg on my feathercraft so able to go long distance on a 6 gallon tank.

I got a 2.5 merc 4 stroke on my penguin only because I don't have to mix oil in the Gass.  I have an old Montgomery ward 5 horse that I may use one day if I ever meet up one day. I'm no speed freek lol. I once it a sand bar with a 7.5 Johnson on my 12 ft and almost flipped the boat . I'm ok with slow I'm just a Fisherman. 

My 2023 30HP, 4 stroke, trim and tilt Tohotsu weighs 128 lbs.  That is amazingly light weight and very economical, plus it has plenty of power when needed.  It is 30lbs lighter then the 62 Lark IV I used to run, I use a motorcycle battery and I no longer have to carry 18 gallons of gas.  I shaved over 100lbs of the stern with the change.
 

Good luck with the twenty let us know how it performs. What does the twenty weigh?
A fire on a boat is a scary thing, rebuilt is such a vague term, sometimes it’s accomplished with just a spray paint can.
37 MPH out of a 30 HP outboard is pretty remarkable speed, you know you can always slow down if the water is rough

Part of the reason I bought my Feathercraft was to find a use for a Suzuki 30hp long shaft I removed from my 1972 Arrowboat.  Well, this weekend the replacement "rebuilt" Evinrude 50hp 2 stroke had an electrical fire....was the last straw as I realized the many reasons I prefer 4 stroke motors.  Besides, gives me an excuse to move the Suzuki 30hp back over to the Arrowboat and get a lighter motor that is NOT a long shaft on the Feathercraft.  Unlike some of speed junkies(to judge from the posts here) I don't feel the need to go much past 25mph on my Feathercraft mainly because I don't want a spinal readjustment.  

So, after much research, including reading a lot of posts here and elsewhere, I opted for the Suzuki 20hp which should have more than enough power to get the fully loaded boat up on plane but is 50lbs less on the transom of the boat and, being short leg, will work better in some of the shallow water areas I want to explore.  Besides, like the idea of a motor head more to scale with the boat and there was the fact that this was the least expensive way to put a 4 stroke back on the Arrowboat.  

Attached picture is with the 30hp Suzuki long shaft motor.  Would get the boat up around 37 mph with just me on it.  Had to significantly raise the transom and didn't have any issues but, still, just looks weird and more speed than I need.