If you went to the site, you'll see that this guy doesn't cut the roof structure ie the transverse bracing, he just cuts out some of the sheet metal between the rear-most brace and the back door, creating a sliding hatch to get up into the bed. Thus it isn't a pop top in the normal sense that removes and raises the roof, it's more like a second story. Can't speak to leaks but there's always caulk. Thousands of vanagans can't be wrong. In Europe, you can get a roof-raising pop top installed in a day on a Connect and the cost is of course half what you pay for pop tops here, like on the Metris, and this one. You can have one shipped here, too but then customer support is a little far away and your local top guy probably won't guarantee his work since it isn't his top. That's why this installer in San Diego or Portland has more appeal.