Holly's a 45lb one off and boards amidships as we do. It took about 10 minutes with some treats to train her. Lena made a Sunbrella cover that protects the teak cap rail and paint plus it gives Holly some additional traction. Two snaps is it. Morgan, our last dog boarded, the same way. On a high, fixed dock, we have a dog ramp and she boards at the bow.
https://www.chewy.com/solvit-ultrali...-ramp/dp/53683