I highly recommend against the infinity. I dont know much about the open bow but I doubt it could have performed better than the closed bow version . I had the Svfara (same hull as infinity but upgraded fit and finish) and it sucked in more ways than one. Wake was hard as a rock 15-28. The 22 wake could kill a man. If your lake has right hand turn islands which I believe most do, the boat would lean so bad that water would spray all over the windshield and the rub rail would constantly fall off. Also, the boat had a vdrive configuration which put the prop way under the boat. This posed a few problems. One, the boat tracked kind of funny, it almost felt like it would pivot around . Second, if you wanted to change the prop (which you will have to trying to find one to soften the wake!) you had to crawl way under to reach it. It hurt laying across the prop guard rails ! And third, the prop was so close to those rails that if you were not carefull while loading, the prop would actually hit. I munched two props and I'm very experienced at loading. The boat also had these weird wings that came off the side. Supposedly added on later versions to reduce side spray. These stupid things would always get caught up the wheel wells.
I think this boat is better suited to barefooting open water use. I ended up taking bath on it. Bought it new in 08 factory direct for about 42K. Sold it with under 100 hours in 2010 for 16K. Good ridence!