Splinterlands: Grinding in Survival!

The 2 battle modes I am playing consistently every season is Foundations and Survival!

Foundations is an obvious pick as you can earn upto 3 Foundations pack every day with daily rewards to level up your portfolio.
Survival is a mode which not many people are playing regularly but they should.
When Survival had started it was only played by whales as the moment a card you played died it could not be used again in the entire season. This gave a clear advantage to players with big collections with multiple copies of strong cards.
To offset this disparity the cooldown period for cards killed in battle was reduced.
Despite this not many players are actively playing Survival mode.

I was able to get into Silver III much difficulty but now I guess it will be slower to advance.
Last season I started playing Survival mode very late but still was able to collect 40,000 Glint as rewards which is useful on top of 2 great cards.
Keep in mind that you need to fight minimum of 100 battles which can be tough to complete if you start very late in the season.

Which mode are you slogging it out this season?