shouldn't you not worry about hydrolock unless you're driving through pools of water? on the lexus and mazda forums i used to post on, everyone said hydrolock is over-exaggerated and that it rarely happens except when driving through high pools of water or a flooded street cuz the filter alone is going to prevent most the water from even getting inside the filter, and then that water has to travel all the way up the pipe. i dont think there's enough suction to suck in enough water to cause hydrolock during even a heavy rainstorm. just dont drive it through like 7" of standing water.
Hydro lock is relatively common when driving through floods, either where the water is above the level of the air intake or the vehicle's speed is excessive, creating a tall bow wave.