For the first time in my Hobie sailing life (started in 1981) I am sailing in fairly strong winds, force 5 to 7, before 2 to 4. I am also sailing with a very inexperienced crew. Every tack is a gamble, do we capsize or not. Last time out in about force 6 we capsized in the middle of the tack almost backwards over the leeward rudder. What is going wrong? any suggestions and advice very welcome.