The short answer
A PWC has more sealed, damp, dark cavities per square foot than anything else we detail, and storage is when every one of them gets five uninterrupted months to do its worst.
The prep that prevents it is not complicated: get the water out, get the soft goods out, dry the compartments with the lids open, protect the seat and the hull, and cover it breathably. Our storage prep clean is $79 on top of a detail, and it covers the mineral flush, the full dry down, and the protective seal.
The mechanical side, flushing the cooling system, stabilizing fuel, and anything involving the engine, belongs to a marine mechanic and to your owner manual. Do not let a detailer tell you otherwise.
The four things that actually fail
| What fails | Why it happens in storage | What prevents it |
|---|---|---|
| The seat | Flat, fully exposed, and the highest UV load on the machine | Clean, condition, protect, and store out of direct sun or under a breathable cover |
| The storage compartments | Wet gear sealed in the dark for months grows mildew and smells | Empty completely, clean, dry, and store with the lids propped open |
| The engine bay | Lake water sits in the low points and corrodes connectors and fasteners | Drain the hull plugs, dry it out properly, and store nose high |
| The hull gelcoat | Uncovered UV and dried mineral film chalk the surface over a season | Wash, wax or seal before it sits, not after |
| Wiring and the exhaust outlet | Rodents nest in a machine that is warm, sheltered, and full of foam | No food or soft goods aboard, and block open outlets if the ski is in a shed |
What goes wrong in storage and why
The detailing checklist, in order
- 1Flush the cooling system per your owner manual first. This is mechanical, it is time sensitive, and every other step assumes it has already happened.
- 2Pull the drain plugs and get the water out of the hull. A ski stored with water in the bilge is a ski stored with a corrosion source, and in a hard North Texas freeze it becomes worse than that.
- 3Empty every compartment completely. Life jackets, ropes, tools, sunscreen, and the towel someone forgot. All of it comes out and none of it goes back until spring.
- 4Wash the whole machine, including the intake grate and pump area, where weed and sand pack in and hold moisture against metal.
- 5Do a mineral flush of the exterior, which matters everywhere in DFW because of how hard the water is, and matters more if the ski runs on Texoma.
- 6Dry everything, then dry it again. Compressed air through the seams, the hatch seals, and the footwell drains is what separates a clean ski from a dry one.
- 7Clean and condition the seat with a UV protectant. This is the single highest-value five minutes in the whole list, because seats are expensive and they fail in exactly this way.
- 8Wax or seal the hull. Whatever is on it in November is what is protecting it through five months of sun.
- 9Store the lids and hatches propped open so air moves through the compartments, and put the cover on only once the machine is genuinely dry.
One visit before it sits
A PWC Deluxe Detail at $199 plus storage prep at $79 is what a ski should go into storage on. Bring a second ski and it is $25 off.
Why the Texoma crowd needs this more
Lake Texoma is genuinely saline in a way the rest of the metro's lakes are not. The upper Red River basin carries natural salt springs, and USGS sampling put median chloride in the lake between 122 mg/L in the Washita arm and 431 mg/L in the Red River arm, with the latter above the 300 mg/L secondary standard in the state's surface water quality standards.
That is far below seawater and far above what a ski running on Lewisville sees. Salt residue left on metal and in an engine bay for five months does not sit inert, it works, and the damage is exactly the sort that shows up as a corroded connector or a seized fastener next spring.
So if the ski rides Texoma, the flush and the dry down are not the optional part of storage prep. They are the reason to do it at all.
The cover question
A cover on a wet ski is worse than no cover, and this is where most of the mildew we get called about comes from.
The mechanism is simple. A cover traps humidity against a seat and a hull, keeps the sun off it, and holds the temperature up. That is a growing chamber. A ski left uncovered in a garage would have dried.
Two rules make covers work. The ski goes under fully dry, seat included and compartments open. And the cover is breathable fabric rather than a plastic tarp, because a tarp does not just fail to breathe, it condenses moisture on its underside and rains it back down.
Covers themselves need attention too. A cover that has gone spotty or stopped beading water is holding moisture against the machine rather than shedding it, and washing, treating, and re-proofing one is $59.
Do not forget the trailer
The trailer is the part that gets dunked in lake water at every launch and then parked wet for a week, and it is the part nobody inspects until something fails on the highway.
Storage is the right time to deal with it: frame degreased, wheels and tires cleaned and dressed, bunks rinsed and checked for wear that will scuff a hull. That is $69 as an add-on.
The greasing, the bearing service, and the light wiring are mechanical rather than detailing, and they are worth doing in the same off-season window while the ski is off the trailer anyway.
This is an educational guide written to help DFW drivers budget and decide with confidence. It is not a binding quote. Your price is confirmed up front before any work begins, with no deposit.