"Why is Doug"s Squire not out there? Do they have to be entered in the race to qualify for concourse?"
Mike,
The Spring Nationals class was 1/8th Nitro Scale. IMPBA and NAMBA Rule Book are available on-line FYI.
Doug's F/E 1/8th Scale was not entered, so he drove the U-4 KW3 loaner boat that belongs to Rick Bellinger. I believe Rick, as regional Scale Director, will encourage Doug and any other FE 1/8th Scale to race in District 12 to run with the nitro scales, to build the entry numbers in their district. Doug has used the FE guide lines that R/C Unlimiteds have used the past few years to set up his Squire, which has allowed 1/8th F/E Scale boats to compete with the nitro 1/8th Scales at R/C Unlimited races. This concession exists no where else to the best of my knowledge.
CHEERS !!! Bob