Although I prefer the Church Boards because they can handle more weight and the nifty rear pin that almost makes losing a board impossible, there is nothing wrong with the Off Shore Boards. I think the best new investment you can make at this time would be some TT-30 divers. As has been stated you can get the depth that you need out of them easy enough and the only difference is that it takes more line out to achieve the same depth but they do pull easier than the TT-40 divers. Like I said I don't know that much about the Off Shore Boards but you might want to check and see if the lead ballast weight is adjustable. If it is then move it all the way forward to put more weight on the front of the board to help some in bringing down a little of the vertical angle caused by the divers pulling weight on the rear of the board.

If you are using more than one board per side you can also watch the angle the boards are running away from the boat, I call it the V effect with the bottom of the V being the boat and the wings being the line out to your boards. If either one is lagging back even just a little then some thing has change on one or the other. It could be a junk fish hooked up or a larger fish just sort of swimming along making the board lag some. Then again it could be that the one that is forward some has been tripped and that is the reason there is a difference in the two or more boards on that wing of the V or it could be both. Your patience will be rewarded and eventually your experience will help you you to determine which is which. Please be aware that the port side wing of the V will most likely be at a different angle than the starboard side due to wind direction, currents or both.