interesting never thought of it. well the significance was the whole malcom ideal, maybe thats the only reason they had it in the 1st place, to set that whole situation up. but u r asking why UNCLE MARTY brought it in the first place...like i said maybe just to set up the whole malcom thing... or there is soething else, idk. and why did he have a gun???!?!?!?!? i hope they answer this be 4 the series is over

Well, This is my theory... I believe he knew Henry was Wakefield's child. Thus, setting up the whole father son killing duo. He could have brought the money as some sort of bargaining chip too stay alive and if not he had the gun in self defense from them... That's why it was on the boat when Hunter left, he was planning on leaving and taking his money and gun since he didnt have too use it. That's just my theory

Uncle Marty had very specific plans with that money. I think that he was paying Hunter Jennings to kill Thomas Wellington. In that bag with the money was also a gun(for self defense), a blue container and something that looked like a cable. I'm wondering if Uncle Marty rigged the boat so that the gun pulled up and shot Hunter Jennings as it did. The bridge that Uncle Marty was crossing when he was killed led from the beach area by the Candlewick Inn. We saw that the boat Hunter was in had a tag on it labelling it as property of the Candlewick Inn. Hunter was a popular person according to the motel manager where he was staying; so clearly Hunter was communicating with more than just Thomas Wellington and I think that Uncle Marty was at least one of them.

Uncle Marty brought it for malcolm to open up his own brewery. Someone says so in the last episode