[PK]

By the way, I wouldn't handle this with an enhancement (whether direct or as a technique), because that would be overpriced IMO. I'd feel bad forcing someone to buy a +80% enhancement to offset a -10% limitation!

Instead, I agree that this calls for a perk, though not something as generous as No Nuisance Rolls. I'd go with this:

Long-Distance Levitator: You have enough mental and physical endurance for the long haul. When your travel time is measured in hours instead of minutes, you need roll against Levitation only once per hour, but based on the lower of IQ or HT. Assess hourly FP costs as if hiking: 1 FP + FP equal to your encumbrance level.