Hey OJB......I have Goodyear Marathon's on my 19' Triton (almost 3 years old)...I bought some of those for my last boat (which was what was on it) and I have been pleased with them.....I got them at a Goodyear tire store on Coursey blvd. between Stumpburg and Jones Creek Rd (south side of Coursey).........they were not cheap...about $150 per tire........folks there were nice.....done business there couple of times.....they had to go to the warehouse to get them and I could not find anyone else in town to supply them.......
if you search the "Main Crappie Forum" for trailor tires you will find that some folks found these at Walmart and also some did not like the tires......there are several other posts suggesting other brands.....just got to scroll thru it....
hope this helps....