Need any information on a 21 ft rally sport hombre. (That's what I think I have because the first 3 letters on hull starts with rsm). I can't find anything about this boat

not sure what you have but rsm as the first of the HIN comes up as:

ROBIN SMITH

MIC: RSM Status: In Business
Company: ROBIN SMITH Company Official: SMITH, ROBIN
Parent Company: Parent MIC:
Address: 175 AIRPORT RD City: MANTEO
State: NC Zip: 27954
Country: USA Phone: 2524736168
Fax: In Business: 8/26/2015
Out of Business: NULL Date Modified: 8/26/2015
Type: Outboards, Open Motorboats, Jon Boats

Addtional Address: FACTORY ADDRESS: SAME AS ABOVE.