You are on a slope if you create water it will run down the slope. The wagon is a standard sized wagon that has been outfitted with a box to allow people to be inside and shooting arrows out of it two per side. The wagon has clearance on the road by a pace in either direction to the side. This path is narrow and was cleared to be both a usable road to the strong hold by a choke point for anyone wanting to bring supplies in to support a prolonged siege against the strong hold. It was well planned. Turning the wagon would tight as you would have to remove the horses from in front disassemble to hitch and then turn the wagon. There will be barely enough room to do this. Once that is done you have to reassemble the hitch reconnect the team and continue on your way. It will not be a easy or a quick task. Lifting the wagon would not be a issues it is the tight turning quarters. You can always head up to the top of the hill where there is plenty of space to turn around. You will also be able to see the strong hold and they will be able to see you.
Dear Dungeon Master, just want to know if I have your blessing with activating the 4th and 5th gems. I have not checked if I qualify yet but need to know ahead of trying.
Dungeon Master, I got:
Huh, I didn't think about the 3.5e fighter when I proposed that gem outcome. Almost everyone else has something.
Kn, as a suggestion, perhaps in this case you could grant a 1/day ability imported from somewhere else.
For instance, the 5E fighter has Action Surge. Which could be rewritten for 3.5e as "Action Surge (Su): You can push yourself beyond your normal limits for a moment. Once per day, on your turn, you can take one additional standard action.