A connector assembly for use in a modular structure is intended for temporary usage, and may be assembled and disassembled conveniently. The device comprises a reel seat holding device for holding the reel and reel seat assembly that is detached from the fly fishing rod and a waist holder adapted for releasably mounting the reel seat holding device on a fisherman garment. Estimated magnitudes for a second number of delay values located between the first number of delay values are calculated by interpolation, and a combined delay profile is provided by combining the magnitudes for the first and second number of delay values.