This inflatable boat was in trouble in the bottom of the air space at the point of the cone (heels), and from both sides, but he also had a fairly large air leak on the left side of the airlock.

We have strengthened the airlock with two large pieces of cloth (so called heels). Then we tried to find the leakage of air which come from the external film release of the air space from the left side. We're not the whole movie, and the bow and found that leaking the film of the air space at the point of the bow which we fixed and added large reinforcements, fabrics for the best thing for the bow. Finally, we washed the boat with specialized cleaners and we had a silicone emulsion for the better protection of the air space.