Landing and finishing games on team islands

So I played a 2v2 team islands game.Me and my teammate completely destroyed the opponents on water.So they left water and focused on land military.

My teammate had cannon galleons all around their island and I did as much as I could with galleons(I was huns)

But when it came to landing we couldnt do shit.We first tried transportation.I went elite tarkans + cav archers and trebs and my teammate went paladin+trebs.But no matter what Happened,no matter how fast we transported across,we could never completely overwhelm our opponents.We tried transporting vils to build production buildings,but those would just get trebbed down.

This went on for 3 hours.Both our scores were like 7000 ahead of our opponents,but these players just wouldn't gg.

My teammate rage quit and I had to do the same

So what should we have done differently?We also deleted so many vils and ships to make space for military but we were just stuck