Can I add a stringer to my 7s 8 ft superfish III carbon fibe

[domigeezer]

Can I add a stringer to my 7s 8 ft superfish III carbon fiber surfboard?

I recently bought an 8ft. 7s superfish III carbon fiber surfboard. It does not have a traditional wooden stringer. I love the board. That’s the good news. The bad news is that within 3 months from purchase the board has completely snapped in half once and buckled twice. I have had the board professionally repaired each time. The repair shop did an amazing job. I notice no difference in the performance of the board. But the repair shop and I believe the board is just too fragile in the 8ft long dimmension for the surf conditions where I live.
Could I route a channel in the board 4 inches from the center fin box to about 4 from the nose? Then glue both sides of the stringer and insert into the channel. Then glass over top and bottom. This way I do not have to cut the board in half and do not have to reset the fin box or wrap the rails. Since I am retired and kind of a handyman I would enjoy turning this board into a project board.

Any suggestions?
I am an intermediate level surfer 56 years old 6’1, weigh 185 lbs. I have been surfing now for about 2 years. I surf Dominical Costa Rica 3 days a week in approximately head high surf. When it gets 2-3 ft. overhead I do not go out because I wish to surf another day. I am so glad I discovered this sport!

Domigeezer

[dtc]

Interesting question. Sounds like it should work but have no personal experience. I think the issue might be getting the stringer to fit exactly into the channel with no gaps along the side, or what to do to fill the gaps (just add more resin/goop I guess?). But whether that creates a strength problem I don't know. Probably not so much strength but flexibility - is the board going to twist around the stringer?

I'm just thinking out loud here, no real insight

You may want to pose the question to the Swaylocks forum (http://www.swaylocks.com/), which is a specialist board building site.