Dumbbells

Surfing just once a week is really making me out of shape. I tried going to the swimming pool but it is too boring and I really hate it. It plays trick on my mind, I'm in water and yet I can't surf. Really frustrating.
I think watching surfing videos while I use a dumbbell would probably keep me motivated but have no idea what weight should I use? I was thinking 4KG might be just enough? Since its the endurance I need rather than the strength?
On another note, I had a melt down yesterday. I waited all week to go surfing. Took me 2 hours or more to drive 90 miles . Got there and the waves was not surfable. Then another 2 hours of traffic back home. I think it won't be long before I pack my stuff up and leave my job and family.
They are worried about my mood swings and trying very hard to make me happy. But I can't find anything that I like anymore. Things that I use to love now hate 
I think watching surfing videos while I use a dumbbell would probably keep me motivated but have no idea what weight should I use? I was thinking 4KG might be just enough? Since its the endurance I need rather than the strength?
On another note, I had a melt down yesterday. I waited all week to go surfing. Took me 2 hours or more to drive 90 miles . Got there and the waves was not surfable. Then another 2 hours of traffic back home. I think it won't be long before I pack my stuff up and leave my job and family.



