What I have found is that in the original T5 Alpha Playtest materials on the 2007 CD, Hop and Skip Drives consumed fuel at 1/10th the rate per drive number that Jump Drives consumed fuel, respectively (Tons = P x Hull / 100). . . .
From T5 Alpha Disk (2007):
Hop & Skip Drives
- The Mythical “Hop” Drive. Hops are measured in tens of parsecs; the ship Hops exactly that distance; one Hop takes about a day. Fuel usage is relatively small.
- Hop Drive (per Hop). A Hop Drive requires 1% of Hull Tonnage per Hop number (subject to PPlant Overclock) per use. A Hop Drive can perform ONLY a Hop equal to its Potential.
- The Rumored “Skip” Drive. Skips are measured in hundreds of parsecs, but the final distance is inexact. One Skip (regardless of distance) requires several hours. Fuel usage is negligible. A Skip contaminates Jump Space in its originating system, and is subject to SkipScatter.
- Skip Drive (per Skip). A Skip Drive requires 1% of Hull Tonnage per Skip number (subject to PPlant Overclock) per use. A Skip Drive can perform ONLY a Skip equal to its Potential and is subject to Skip Scatter (1 parsec in a random direction from the destination hex).