Frankvast

The other day a guy at work showed me these glasses that are made for gamers from Gunnar (http://www.gunnars.com) which really help with screen contrast. I was thinking these might be great for on the water to see changes in depth. Has anyone had experience with them? Or does anyone have a brand or suggestions?

First off, just back from a 2 week R&R. Didn't go anywhere except the local lakes (Caesar Creek & East Fork). So a shout out to the 5 other Sea Doos I saw on Caesar Creek.

For those of you who have asked about top speed, I had my 2010 Challenger SE (255HP) clocking at 58 speedo/56 GPS with just me and a half tank of gas. Let's call it 57 since neither is 100% accurate. Felt like I was flying when standing up. When balls to the wall like that it does guzzle the gas. But I could maintain 45 at half power.

Now the question. I am looking to buy a spare tire for the trailer. Currently it has ST185/80 D13's on it. Almost all I can find locally are ST175's. One Marina has a ST185 in stock, but they want $60 more for it. I couple of the tire places said ST175's should be fine on it. I only want it for a spare, but as I would NEVER mix and match on an auto, I was looking for some opinions on the sizing question.