In the any% category, the "anti-gravity" (AG) or the "double-strength boosters" (DSB) can be bought in the shop.
+ Allows the pod to reach a speed of 4p/f in the y-direction if tethering an object, instead of the normal max speed of 3p/f. Since there are some vertical sections that need to be traversed in planet 13, this has the potential to save time.
+ Saves 256 frames of menuing in the shop, compared to DSB
+ Not impacted by gravity (or gravity balls) while activated
- Speed boosting in the x-direction while tethering objects is negatively impacted
+ 4 times the acceleration of the default boosters (both in the x- and y-direction)
Despite starting out with a lead of 256 frames on planet 8 from less menuing, compared to buying the DSB, only about 1/3 remained near the delivery of the 1st fuel cell. At that point, no reasonable solution was found for navigating the last part to the small wormhole without major time losses.
While some time can be expected to be gained back due to additional speed boosts possible with AG, there will also be several big time losses along the way due to slow cornering with the default boosters that AG can only partially cancel in the y-direction (and not at all in the x-direction). The test therefore ended early on planet 13 as it was obvious that AG would be a lot slower than DSB with the approach that was used.