If you're coaching a team there's a lot to think about. Training, stretches, keeping the players fit and sticking to the rules. With so much to consider it'd be easy to let one of the most important aspects of good sport go by the wayside, drinking plenty of fluid. The team will never go thirsty if they keep a sturdy sports drink holder close at hand.
Step 1 - Measure and mark the length and width of the base and top piece, (I made mine 450mm long by 200mm wide, which allowed for eight drink bottles). Using a square, scribe pencil lines to the marks, then with a sharp handsaw cut along the waste side of the lines.
Step 2 - Measure and cut two side pieces to the same length as your base by 150mm high.
Step 3 - Measure and cut two end pieces to fit flush with the side pieces by about 360mm high.