How heavy is too heavy?

That's pretty funny Andy because when I was fishing in Kona using Izorline 50# copolymer mainline and snagged the reef in 180 FOW I couldn't break it off. I was in a rental scupper pro and it was choppy so maybe in a more stable boat I could of but most folks say #40 unless you are using a dropper loop. 

Yeah a scupper isn't as nearly as stable as a fish n dive.  If it were calm I could see myself having a problem.  Using the swell I broke sixty pound braid on my last trip but it was tough.  I usually fish less than fifty too. 

I'm similar to Scallen and stick w/ 25# mainline and then a little lighter on the leader most of the time. When I troll hoochies for salmon I do ramp it up to a 50# leader for actions sake. When dino fishing I crank it up to 65# braid. In my area when first hooked dinos do kind of a gator roll and generally thrash around a lot. In the past I had quite a few break off at that time which I attribute to the line being cut on their scutes. Since moving up to 65# I haven't broken any off. IMO it is pretty dangerous running such a heavy line but I've always got my safety knife close at hand just in case.

Z

I probably should've added that you must pull a snag from a stable position. Most of the time, I'll straddle the yak for better balance. And remember to pull the snag straight up...because if you pull at an angle and it pops, you could end up flipping the yak with your momentum.
In the end, it's all about confidence...use whatever type/weight line you have the most confidence in. Is it time to go fishing yet?

Yeah a scupper isn't as nearly as stable as a fish n dive.  If it were calm I could see myself having a problem.  Using the swell I broke sixty pound braid on my last trip but it was tough.  I usually fish less than fifty too. 

Problem is breaking 60lb braid with out a leader the braid will most likely not be the breaking point. Also 60lb braid is way more then needed for kayaking for rockfish even wsb and yt the most guys go is 60 and that fight is alot different then a big ling...

Yeah 20-25 pound is plenty but I fish in Hawaii durring the summers and I really don't want to switch out line.  I meant to say less than fifty feet not fifty pound test. 

I probably should've added that you must pull a snag from a stable position. Most of the time, I'll straddle the yak for better balance. And remember to pull the snag straight up...because if you pull at an angle and it pops, you could end up flipping the yak with your momentum.

Excellent point! I like to take the braid in hand, (after the rodtip), and wrap it around my billystick, wrapping more of it as the swell gives me slack. The whole time I'm pulling from the very edge of the yak, right at my hip. Many times the line is touching the side of the yak. I make sure that spot on my yak is smooth so that it doesn't cause the line to break off right there.
20 lb Maxima Green is just tough enough to break off, for me.