50+15 = 75.... that works sooo well

Also, the 3x50=2x75 bit, which is true in theory, but assumes that plunders always gets 3 attempts.

I'll make you a counter offer.

You still get 3 attempts, but you can only succeed once(after first success, it's over), so in best case scenario, you only need to plunder once. Success grants 150 coupons.

At the same time, make support matter by not having hp recovery between the fights. Also, allow a player to forfeit the support fight anytime they want and start the second fight. This is to prevent players from stalling the fight after an assured victory to heal up (talking from masuri/survival experience here)

This would make any single plunder harder. But as soon as you get one, you will get full reward.