Had this problem on my 2008 Shamrock. Quote by local dealer to repair the bunk end was between $1,100 and $1,300 (new plywood and re-laminating). I understand some people do the repair themselves, but over my skill level. Turned out the cheapest option was replacement of the bunk end. Service manager worked with me and ended up quoting me $875 which included $150 shipping from FR to the dealer. Was going to go with this, but ended up trading.
2015 Shamrock 231KSS, Oyster shell
2016 Chev Silverado LT Z71 Ext. Cab, 4x4, 5.3L V/8
Reese Straight Line WDH, 2000W Honda Gen.
2 Old Town kayaks & 2 Boston Terriers - Zoey/Gonzo
Lar & Ruth
55 nights camping in 2015, 45 in 2016