[Rich]

Looking at a 2007 sx 18 , for tow ing tubes and ski, has the 135 hp . Would this be a good buy ( 11000 )

[mikeyt]

The 3.0 will pull tubes and skiiers but it will struggle a bit particularly if there are more than a couple of people inside the boat while doing so. You can help it out a bit by having a 4 blade prop (maybe an 18") that will bite the water better than the stock 3 blade and not running with a boat load of people at the same time. If pulling tubes/skiiers etc will be a primary use of the boat you might be better off looking for one with a 4.3 in it.

But...the nice thing about the 3.0 is that it is very easy on fuel and economical to run.

[Farmboyjohnson]

I have a 3.0lx in my 180 and I use it forvwakeboarding from a monster tower. I have put a 15 pitch 4 blade prop on and It pulls two on kneel boards easy enough. If you wa nt an easy pull out of the water put some one up front.

[Rich]

Thanks for the answers , looks like this will work for our needs . We will be boating in Lake Erie near Buffalo , last year was a hot one and I want to get back into boating.
Rich