I do have a rerturn spring. A failsafe is somthing I should get but I dont think either would have saved me this time. Whatever the problem it happend before it hit the water. I lost everything no steeering no throttle. I trhink It is time to upgrade the radio rec. and the servos. the motor seems to be fine I dont get why when I put on the pull start it wont pull like the motor is locked up but if I pull the starter off the motor turns freely the piston move freely Its like the backplte is to tight.