
Trailer guides
Does anyone use this style trailer guide on their pontoon trailer? Pros and Cons?

Does anyone use this style trailer guide on their pontoon trailer? Pros and Cons?
Just got a 2018 Sun Tracker Sportfish 22 DLX with a Mercury 150. Had it out for the first time today. Loading is a little tricky, but I'll get the hang of it.
It handled and rode the water like a dream. Kids and wife had plenty of room to move around and get comfortable, even with all of our gear onboard.
I was able to get 33mph with me, my wife and two kids, a cooler, fishing gear and full tank of gas.
Does that sound about right or can I get a few more mph somehow?
I've read about dirty tubes slowing it down. How can I tell if these need a cleaning?
And what is this silver port on the lower right side of the motor?
Would a two tube pontoon with a 150 be appropriate for a day trip from St Andrews State Park in Florida to Shell Island?
I'm looking at buying a new to me Pontoon with a 150. It will be used for fishing, general lake cruising and some tubing for kids. Is a tritoon really worth the extra money or will a nice two tube pontoon with a 150 be able to handle it just fine? We may even have a maybe once a year trip to the shelf for a couple days for fishing. No crazy driving or tubing there.