Is the motor height going to be an issue?

[LDUBS]

"Also, if your motor isn't at least 70% of the max hp your boat is rated for you're probably going to wish you had gone bigger. Do it off the start. I should have just gone with the 20 or at least the 15 off the start. Lesson learned."

We hear this over and over. It really is good advice. I think 80% might be an even better rule.

BTW, hitting 20+ mph solo with the 9.9 is pretty good.

 

[S.E.R.E.NITY NOW]

If it was just me I would have kept the 9.9 I was more than pleased with it's performance. It really came down to safety. Im on a big lake and with my family in the boat it wasn't enough to get off the water quickly if we needed to. I'm good on my own but I don't take any chances when it comes to them.

"Also, if your motor isn't at least 70% of the max hp your boat is rated for you're probably going to wish you had gone bigger. Do it off the start. I should have just gone with the 20 or at least the 15 off the start. Lesson learned."

We hear this over and over. It really is good advice. I think 80% might be an even better rule.

BTW, hitting 20+ mph solo with the 9.9 is pretty good.

 

[FuzzyGrub]

Glad you got it working well for your needs. We all learn that hp rule one time or another.

 

[Bailey Boat]

I believe I suggested that solution in post 11 back in April......

 

[S.E.R.E.NITY NOW]

I believe I suggested that solution in post 11 back in April...

You did. I really didn't want to move the motor further back for several reasons. One was excessive bow rise if I upgraded to the 20hp which I did. And it has a longer tiller than the 9.9 so the reach didn't change much. But now I have the bow rise issue with the extra weight and it being set back behind the transom.

 

[rebeldrummer96]

Agree with Thill, test it. It is probably going to run fine with the 1" blocks. Going to flush may pick you up some mph, but might cause problems when turning. Many mfgs recommend 1" below. My 10HP Sportwin sits like that on both boats I've used it on.

To go higher than the 1" blocks, can you just use the transom thru bolt mounts?

Get a Tiny Tach or equivelent to record WOT rpms, along with something

Do you realize that the jack plate also sets the motor back?? Almost un avoidable....

Check Tiny Boat Nation for a "Transom Plate".... https://tbnation.net/products/transom-mounting-bracket

If you order make CERTAIN of your existing transom thickness.....

What if you bolted two pieces of angle taller than the transom to the back of the transom with a "riser" bolted to the angle from top of transom to desired height? Thinking about trying this myself, just concerned if the angle or "riser" flexes and cracks the mounting bracket. Considering this for a 15hp johnson clamp on.

 

[Bailey Boat]

Over complicated and has Goldberg written all over it.... Just use the transom mounting bracket and it's covered....

 

[Still Afloat]

You did. I really didn't want to move the motor further back for several reasons. One was excessive bow rise if I upgraded to the 20hp which I did. And it has a longer tiller than the 9.9 so the reach didn't change much. But now I have the bow rise issue with the extra weight and it being set back behind the transom.

Can you move some weight forward? Trolling battery, fuel, wife, dog, etc.?