I did the board, but I'm a cheapskate and I don't mind rolling the dice a little on a repair. It's gotten me another 4-5 years of use now out of the system. But something might die in it tomorrow.
I'd rather fix what I have for $3,000 than all new for $8-10,000. I don't think if I was upgrading the whole thing, that I would use hirschman. I like the cranesmart scales (tensionometer rather than pressure transducer). I've never had a full system cranesmart though.
Don't you have a old tms 300?
I run my tms 300 with scale and a boom angle indicator and boom length by on stickers on the boom, but like I said, I'm cheap, and I like simple. I mostly only run single line also, a guy that runs two winches all the time would have to buy a second tensionometer. I figure if I have the weight, boom length and boom angle, its on me if I mess up. If you have a bunch of different people running it and some aren't the most experienced, a full lmi is not bad insurance.
It will be the cheapest to just replace the board. Depending on what you do and who your operators are would determine for me what kind of system I put in. I kind of like just a manual boom angle indicator and a scale.