Couple of things for you to try:
1. Are you running a P4 with Hyperthreading? If so you need to set the affinity to 1 processor. I've found that my fisher runs fine with HT but does take a little bit longer to reel in. When I switch to 1 processor it fishes like a champ. There is reference to how to do this in the XUFish 3 documentation sticky.
2. Give the Mithran a try, from my experience the wooden rods take out larger chunks of stamina. The synthetic rods (cabor, glass, comp) will generally give you more time to reel it in. I'd try a mithran and a synthetic and see which if either gives you a better result.
3. I took a look at clanwind for you and since you are at 32+4 you should really be aiming for fish that are lvl39-41 since wearing the gear takes your fishing lvl to 36 and you want to stay 3-5 lvls above current skill for good skillups. I went ahead and checked
ClanWind and you would want to do Nosteau Herring (39), Coral Butterfly (40), or Gugru Tuna (41)
Hope that helps, Happy Fishing!