With Mercury 115 ELPT PRO XS CT 4-Stroke and Glide-on Trailer. Maximize fishability. When all you look forward to all year is family and fishing time, you need to be sure that you’re in the right boat to support your fishing addiction. The 18 XTR is designed for your family first and your fishing buddies second (or the other way around, depends on who you’re talking to)! Either way, everyone will be happy, comfortable and looking cool in the 18 XTR.