Mezue ahịrịokwu na-esonụ: Feistmantl nwetakwara nrite ise n'egwuregwu ndị nwoke n'otu n'otu na FIL World Luge Championships na otu ọla edo (1969 - ụwa mbụ a ga-eme na egwu egwu, na Königssee), ọlaọcha abụọ (1959, 1970), na ọla nchara abụọ (1967, 1971). O nwetakwara ihe nrite abụọ n'asọmpi ụmụ nwoke na-agba ọsọ na FIL European Luge Championships na otu ọlaedo (
1967) na otu ọlaọcha (1962). Mgbe mmeri ya na 1969 World Championship, o nyere ndị otu Poland onyinye ahụ mgbe e gburu onye na-agba ọsọ ha Stanisław Paczka mgbe ọ na-asọmpi na Championship: Feistmantl kwuru na ọ "chọrọ isetịpụ ezigbo ihe atụ". N'afọ ahụ, Kọmitii Na-ahụ Maka Egwuregwu Olimpik n'Ụwa Niile nyere ya ihe nrite Fair Play maka ihe ahụ o mere.