I have a option to buy a 1644 go devil boat with a 25hp go devil longtail. I have yet to ride in the boat and was wandering what to expect for speed. I know longtails arent built for speed but I would at least like it to plane off. What should I expect fully loaded? (3 guys, decoys, battery, fuel, etc) Is this rig going to plane off with a full load?

Yes it will plain out, and I would guess in the 16 to 18 mph range.

I will guess with that load, 12-16 mph. Alot depends on how much wear the prop has and what prop your gonna run.. And if your running up river or down river has alot to do wit speed..

Get two of ya buddys and take the boat for a test run..

I run a GD 1644 with a 24lt and I don't think you will see 16 mph with that load. When I have 3 guys in the boat including myself with bowfishing gear (platform/lights, generator, extra batteries, cooler, and a bucket with fish in it it will only plane out if the stars align and you re-arrange the weight in the boat. With that said, that is probably more weight than what your decoys will add up to. I don't think the boat will have any problem planing out, but don't expect 16-18 mph out of it. I would bet you will be in that 13-14 mph range.

Sometimes it's tough getting realistic speeds out of people on here, but with the right prop and conditions you may certainly be able to get a bit better speeds than I'm seeing.

Good luck and I hope this helps.

Don't mind MSB, he must be smoking something. 13-14 is about right.

Reason I said 16-18 is you dont know how big buddys are, or if boat is hooked up, or prop wear or anything most he could expect in perfect conditions is about 18

I wouldn't hit 18 with 3 people in the boat if there was no gear and everybody was naked and paddling.

I've got a 1644 gd boat with a 25 kohler go devil longtail. I can assure you that you will not hit 16-18 mph with the load you are talking about. When turning about 3530 or so rpm's with a slightly wore down prop, you will run about 18 mph with a very light load. You'll be running about 13 with the heavy load you are talking about. i run about 15-16 with 2 hunters 2 dozen decoys, 80lb dog, and gear.

i run a 27lt on a 16*44 at work very light load it runs 20mph. Loaded down with 2 passengers, icechest, work equiptment about 150lbs = low teens 13 to 14.

Speed ain't everyting,it's about getting there and back safely.