You don't even need to melee it into Fyrestone. You can drive down to the bit where the first few skags spawn and boost towards the town. The little dip should give you enough of a kick to launch over the fence.
I know I'll probably get some hate for this but I just want to make my other half's Christmas special. Any help would be appreciated. Whether that's a donation, sharing it, or just leaving a comment about other places I could post.