Guys i'm fairly new to mmt ,but i have been reading as a guest for months and really appreciate all the knowledge you all have to share. I recently bought a 35hp backwater LS that I put on my f&f 1548 with small pods 16" transom and true flat hull with runners. I am getting 23-25mph on average with 6gal gas, 80lb deep cycle battery, flip blind, me(190lbs) and a few back up essentials in case something breaks. Does this sound like respectable speeds? Also if it helps i'm running a 9x8 prop new

I would think your prop is pretty small. I would think you would be running a 10" or 11" prop with 35hp and a small boat.

What does your prop measure from tip to tip, should be 12 1/4", that 35 should be turning a big blade no matter size of boat, measure it from tip to tip and post it up, if you in the 11" range it needs to be replaced

Welcome. I'm a newbie too, the collective knowledge is worth signing on for.

The 9X8 is the correct prop for a Back Water longtail. NO longtail runs a 11 or 12" prop. MB experimented with a 11" with their new super longtail, but went to a 10".

Speeds sound great for a longtail. Sounds like you have a nice set up.

Prop measures 9" across by 2 3/4" front to back going to get a tiny tach to measure rpm's in the morning it helped that I finally got all the leaks out of the pods and I'm gonna do the break in oil change as well boat measures 16'8" long with pods with 1/8th in hull

Here's a pic of my rig

Sorry i saw 35 and assumed it was a surface drive

Got the 35 cuz I wanted the extra torque/thrust to haul my gear and hunting buddies around with usually run 3 guys 4 doz dekes 4 spinning wings plus gear guns and occasionally a dog