You need to fish with me. I do have carpet but could care less if/when things get spilled on it. First day on the water spring walleye fishing last year, buddy loses a bottle of soda out of the drink holder (my fault at 50mph). It hit the deck, he looks at me, I shrug my shoulders and say, "can't be new forever". I've since had everything from fish roe, slime, goose turds, dried minnows and mustard vomit (my daughter got sick). Hell, one of the crappie dot com members daughters had an unfortunate accident in it... it's carpet, it cleans up.
I get one unsuspecting person to go fishing with me at least once per year and he cleans the boat for me!!! But, then again, it is a "Fishing" boat. I do however know guys that have "fishing" boats that are as anal as your brother. I like to drop potatoe chips on the floor behind him while he steps on them. Then I blame it on him! I also like to leave gifts in his cupholders and glove box!!
Right now, my carpet looks like a worm dirt bomb went off on it. We were fishing a tournament in the SOO. You don't have time to worry about it. Yes, I could have cleaned it when I got home however, that cuts in to my fishing time. I'll vacuum it when I am really, really, really bored! Or I sucker someone in to doing it while I clean their fish! Fair trade!
Go fishing with me, I won't chastise you if you get worm dirt on the floor, a perch vomits up a minnow, we play floor hocky with a crappie, or a walleye decideds it wants to roll around like a dog and scratch it's back. Usually, the only rule I have is that you take all the fish home with you. My freezer is full!
I have OCD "Obsessive Crappie Disorder"