If you trailer at highway speed, retention method matters more than vinyl color. Magnets deliver fast everyday hold. LOXX® positive-lock fasteners are designed for peel and shear loads from airflow — the actual stress that lifts covers on the interstate.
TL;DR
- Magnets: excellent for park/storage/short moves; force is continuous but not a mechanical lock
- LOXX®: positive lock after engagement — preferred for long highway hauls
- Failure mode to design against: leading-edge lift + crosswind unloading
- FIT UTV: choose Mag or All-LOXX®; FIT RV: hybrid Mag + LOXX® standard
What highway air does to a cover
At 65–75 mph, a windshield cover faces:
- Stagnation pressure on the face
- Peel force at the top and side edges
- Pulsing loads from turbulence off the trailer, cab, or tow vehicle
- Hours of vibration (not a 10-minute driveway test)
A cover that “feels stuck” in the shop can still walk or flutter after 200 miles if retention is only magnetic.
Magnets: strengths and limits
Strengths
- Aligns cover to glass in seconds
- No tools for daily on/off
- Ideal for storage lots and camp
Limits on the highway
- Hold force is continuous but not a discrete lock
- Edge peel can progress if one zone unloads
- Crosswinds create uneven load magnets alone may not balance on every pattern
LOXX® positive lock: what “positive” means
Positive lock means the fastener has an engaged locked state. Once locked, removing the cover requires unlocking — airflow alone is not supposed to “walk” the fastener open the way a soft friction fit can.
On All-LOXX® covers, multiple LOXX® points share load so one edge does not become the single failure point.
Side-by-side
| Factor | Magnetic Series | All-LOXX® |
|---|---|---|
| Install speed | Fastest | Fast (lock each point) |
| Storage / camp | Excellent | Excellent |
| Interstate trailering | Acceptable for some; not the max-confidence pick | Designed for this |
| Crosswinds | Variable | Better load path when locked |
| Price (UTV) | From $364 | $409 |
Real-world buying rule
- >50% of cover hours are on a trailer at speed → All-LOXX®
- Mostly parked, occasional short tow → Mag still fine while available
- RV towing → hybrid system already mixes both jobs
FAQ
Can magnets work for trailering?
Many owners trailer successfully on Mag. The All-LOXX® recommendation is about maximum confidence and the use case FIT is standardizing on — not claiming Mag never works.
How many LOXX® points are on a cover?
Placement is pattern-dependent; UTV All-LOXX® uses multiple locks at load-critical locations (commonly on the order of half a dozen on many patterns).
Does LOXX® slow install a lot?
Seconds per lock, not tools-and-drill. Still a minutes-scale job once you know the pattern.
Is this only marketing?
No — peel under airflow is a real mechanical problem. Positive lock is a different class of answer than magnetic attraction alone.
Bottom line
For highway trailering, design for edge peel and hours of load. That is why FIT’s hero path is All-LOXX® positive lock, with Mag remaining the fast everyday option while stock lasts.
