Straight Line Sumo Max 975 Bow BagThe Sumo Max 975 goes in the bow of your boat for a cleaner, more balanced wake Straight Line Sumo Max Bow Bag The Sumo Max 975 goes in the bow of your boat for a cleaner, more balanced wake. Adding bow weight is very important in both wakeboarding and wakesurfing. Not only does it help create a bigger wake, but also helps create the desired shape for best results. Compatible with SL's Max Flow Pump rated at 4,250GPH, filling draining this bag will