Geezers of Nazareth Thanks for the very helpful explanation. The heavy duty cling wrap is used by experienced pax in both directions where Africa is concerned and I always have my bags wrapped before departure to ANY African destination. In the UK it's, if memory serves, £5 a bag. I would also wrap my bags if going to South America, Thailand and similar countries.
Sorry if it is a hassle, the wrap operator usually makes sure the handles are cut through and that wheels are fully operational.