Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to get up on a wakeboard [title] Put on a life vest. [step] Even if you're a seasoned swimmer, it's essential that you wear a life vest while wakeboarding. Put one on and secure the straps before getting in the water.

Ending1: As some sunboards do require you to first elevate your knees during the wakeboard ride, holding them up will be especially important. Protect your head as you get on, keeping them above the water. Ending2: [substeps] Familiarize yourself with the hand signals you'll use to communicate with the driver of the boat before you get in the water. For instance, thumbs up means speed up, while thumbs down means slow down. Ending3: If you're on a wakeboard, put on a lifejacket to keep yourself warm and at the same time prevent hair damage from the sun. [substeps] As a rule of thumb, kick your feet in the appropriate directions on your wakeboard in a current as low to the water as possible. Ending4: If you accidentally sit in a pool or keep yourself afloat by sitting on the ends of your board, dip into the pool while wearing the vest and ensure you stay as close to the edge of the pool as possible. [substeps] Make sure the vest is long and sturdy to avoid sliding underwater.

Answer format: ending1/ending2/ending3/ending4