Using good quality equipment to water ski is important for several reasons with safety being one of the primary ones. Making sure that you are equipped with equipment of superior quality also ensures that the tools used do not break while performing the activity.
However, the good news is that the sport does not require too much equipment. While a boat is necessary, and this is perhaps the most expensive of the equipment, the others are a lifejacket and skies and a rope to fasten to the boat.
In case a boat is not available, the skier could fasten the rope to a vehicle and get someone to drive it along the shore of the water body. This momentum can also be used to ski.
If the vehicle is driven at speeds that are good enough, then the skier would have no trouble to gain enough momentum to be able to stand on the water. However, this form of skiing could be extremely dangerous.
A dry suit is something an avid water ski enthusiast should invest in, apart from gloves and other forms of protective gear such as kneecaps and helmets. The suit would keep the skier dry.
More importantly, the streamlined design of the dress would reduce friction and help the skier reach speeds that would otherwise have been possible. The suit could also absorb, at least to some extent, the impact in the event of a crash.
This would save the skier from incurring bodily injuries. Necessary caution should be taken while performing as with any other adventure sport.