Simple vinyl electrical tape will work, but I suggest that you really evaluate why you need it. As mentioned, operational cautions are your best defense. Most common planes, for with sand operation would be appropriate can be carefully operated so as to avoid the damaging conditions.
If you need to use tape, plan for it to come off during flight and make a funny noise. Keep the lengths the same to affect balance the least. If one piece stays on a long time after the other departs, you'll be running out of balance for a while.
It is a float plane trick to reduce water damage to the prop, but again, proper handling will be of more value in damage prevention in the long run.
Pilot DAR