That would be the spot... The only advice I can give is to just keep trying to get through and then just make sure you get to the next level so you can just use the puff of smoke to return lol.
I love the puff of smoke. <3 I've made it through and all, it's just frustrating when I'm back to fulfill quests to kill monsters and I run into that spot again.
Lol. I would also start planting winter crops as well. You will need quite a few of the winter crops for various things... As well as the gigantic versions. When you get to the rune prana you can get some good items by sacrificing the right extra large golden veggie to the right place. And then if you go back again you should be able to sacrifice more veggies.
Shouldn't you be able to reach the winter field by now??? You have to plant them there. I mean, as long as your monsters keep your fields well tended you might be able to piddle along a winter crop over a super long period of time, but the winter field is best.
I know (ish) where the winter field is, but nope, not yet. I might be able to go down that road, but I'm not sure. Last time I tried, a snowman kicked my ass.
I'm pretty sure that if you can get to Leon Karnak then you can get to the winter field. Lol. Besides, you can pretty much run past those snowmen and once you get to the field, you can just use the ship to get there from then on.
The most expensive thing is buying the crap for your fields.... Prices in rf 4 are outrageous compared to the past games.... Its like they want to encourage you to make your own stuff...