As midperson, he became twice World Champion in the Soling together with his teammates Roman Koch and Gregor Bornemann.

[22][1][2] The second time took place five years later 5–13 February on the Guaiba river off the coast of Porto Alegre, Brazil.

[22][3][4] After the Championship in Castellione the Koch team earned the nickname "The Maremma boys".

Furthermore, Koch won two gold and five silver medals at Soling European Championships between 2003 and 2013 all as midperson and with the same team members.

Maxl became "Sailor of the Year 2010" in the Yacht-Club-Berlin-Grünau[23] Koch lives in Munich and works in the insurance and art gallary branch.