Found some very cheap (20 euro) sadle bags at louis.de. For that amount of money I will try it to see if it works. Looks good, no need for a rack because they cannot go in the wheel and the muffler does not become hot. Mounted with 3 straps of which 2 are placed under the sadle. Both can hold 15 L, enough for a weekend two up. More straps availible.