How about a different version of paper Tx each day.
Day 1: Only 4lb test allowed (mono).
Day 2: You are only allowed 1 kind of bait.
Day 3: Create a Slot Limit, only fish between xx"-zz" are recorded.
Day 4: The most fish caught, biggest fish caught, 1st fish caught
Day 5: Bass Olympics - Station 1: Each person starts with a rod and reel with a jig tied on. Need to flip to a bucket 10ft away, jig needs to enter bucket 3 itimes. After 3 times move to next station. Station 2 After your last flip you got a major birds nest in your spool, Un-spool, then re-spool with new line, once re-spooled you can go onto the next station. Station 3: Tie the Jig back on and Pitch to a bucket 20-30ft away. Once 3 successful pitches are made into the bucket, move onto final station. Station 4: Head to the lake, 3 fish limit. 1st team to complete all 4 stations wins (Use weight or length of 3 fish as tie breaker)